First, I'm really glad you feel so strongly about it..but you are wrong to blame God. God cares far more than any of us ever will.
And God has done something decisive about. In the process he has both upheld his own justice, and determination to punish all evil, and not destroyed man's humanity/freedom/turned man into a robot: he gave his one and only Son to die for sinners, taking their punishment upon himself.
First, I do believe in eternal hell and grieve there will be many there. This is the long-held official view of most Trinitarian denominations (and it is my view too).
You say: "I mean except for people who intentionally reject Him and hate Him/love evil." - That is right. And who do you think does not fall inti this category? Little toddlers and younger, and the mentally disabled, OK I grant you they do not fall into this category... but who else?
According to the Bible most of the world fits this category. The world "holds (down) [i.e. suppresses] the truth in unrighteousness" (Romans 1:18 and down to end of chapter).
It is plain there is a God, else there could be no universe. Even more plainly, the universe that is, with all its order and beauty, is obviously the work of a skilled craftsman. And then the existence of life, any life, proves beyond doubt there is a God. Yet he is not thanked nor worshipped because the human race is too self-willed, proud, arrogant, too much in love with sin, to be willing even to seek for him. Instead of seeking for the true God and worshipping him mankind invents gods which suit their sinful appetites (Romans 1:23-25).
Consider what the Bible says in the following passages:-
Say to them, As I live, declares the Lord God, I have no pleasure in the death of the wicked, but that the wicked turn from his way and live; turn back, turn back from your evil ways, for why will you die, O house of Israel? (Ezekiel 33:11)
First of all, then, I urge that supplications, prayers, intercessions, and thanksgivings be made for all people, 2 for kings and all who are in high positions, that we may lead a peaceful and quiet life, godly and dignified in every way. 3 This is good, and it is pleasing in the sight of God our Savior, 4 who desires all people to be saved and to come to the knowledge of the truth. 5 For there is one God, and there is one mediator between God and men, the man[a] Christ Jesus, 6 who gave himself as a ransom for all, which is the testimony given at the proper time. 7 For this I was appointed a preacher and an apostle (I am telling the truth, I am not lying), a teacher of the Gentiles in faith and truth. (1 Timothy 2:1-7)
I am speaking the truth in Christ — I am not lying; my conscience bears me witness in the Holy Spirit — 2 that I have great sorrow and unceasing anguish in my heart. 3 For I could wish that I myself were accursed and cut off from Christ for the sake of my brothers, my kinsmen according to the flesh (Romans 9:1-3).
Here the Apostle writes, saying he truly would be willing to spend eternity in hell if this could save the Jews. He is filled with the Holy Spirit. It is thus the heart of God speaking through Paul. Notice this passage is at the beginning of Romans chapter 9.
“O Jerusalem, Jerusalem, the one who kills the prophets and stones those who are sent to her! How often I wanted to gather your children together, as a hen gathers her chicks under her wings, but you were not willing! (Matthew 23:37).
God says "I would have gathered you, and would have had mercy on you, but you wouldn't let me!" So, it cannot be God's fault.
What you are asking is that God had made us as robots, always doing the right thing without any choice. You are wishing he had not made us human.
In love, God made Adam & Eve without sin;
in love, God made them to live forever;
in love, he gave a wonderful garden, forbidding only one thing;
in love, he warned them plainly what would happen if they ate the one forbidden fruit;
yet they rebelled...
So, in love, he made a way of restoration which would not undermine his justice.. he gave his one and only Son to die in the place of sinners, taking their punishment upon himself so they would not be punished who believe on him;
and in love he made the condition of being saved so very easy, faith in his Son and in his substitutionary death;
but in love, he had to make a place for those eternal creatures who would not have him to be their God, so they would not spoil heaven for those who do believe on his Son and love him.
What really is the alternative? That God steam-roller over his holy justice and let rebels into heaven? In the eyes of some, he has steam-rollered over his justice enough already by sending his own dear Son, the second person of the triune God, to become a man and take upon himself the punishment due to sinners.. all they need do is humbly repent (turn back to God) and believe on the Lord Jesus Christ.
Will "most" go to hell? That would probably depend on whether you believe that all infants and all who die before they are even born (out of every nation) will go to heaven, because the Lord Jesus died for them. I believe this. Some evangelicals are more hesitant than me; but some eminent evangelicals firmly believe it too: https://www.spurgeon.org/resource-library/sermons/infant-salvation/#flipbook/
You said: He just sent Jesus and really didn't care who got saved and who didn't - He basically just hoped for the best.
That is essentially Arminian teaching. As a Calvinist I don't agree with my Arminian brothers: I don't think that is the teaching of the New Testament. I believe that, in love, God made sure that a certain number of people, his elect, would definitely believe and be saved:
3 Blessed be the God and Father of our Lord Jesus Christ, who has blessed us in Christ with every spiritual blessing in the heavenly places, 4 even as he chose us in him before the foundation of the world, that we should be holy and blameless before him. In love 5 he predestined us for adoption to himself as sons through Jesus Christ, according to the purpose of his will, 6 to the praise of his glorious grace, with which he has blessed us in the Beloved. (Ephesians 1:3-6)
11 In him we have obtained an inheritance, having been predestined according to the purpose of him who works all things according to the counsel of his will, (Ephesians 1:11)
26 But ye believe not, because ye are not of my sheep, as I said unto you. 27 My sheep hear my voice, and I know them, and they follow me:
28 And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand. (John 10:26-28)
He does not say you are not of my sheep because you do not believe, but the exact opposite! ... you do not believe because you are not of my sheep.
48 And when the Gentiles heard this, they were glad, and glorified the word of the Lord: and as many as were ordained to eternal life believed. (Acts 13:48)
26 For consider your calling, brothers: not many of you were wise according to worldly standards, not many were powerful, not many were of noble birth. 27 But God chose what is foolish in the world to shame the wise; God chose what is weak in the world to shame the strong; 28 God chose what is low and despised in the world, even things that are not, to bring to nothing things that are, 29 so that no human being might boast in the presence of God. 30 And because of him you are in Christ Jesus, who became to us wisdom from God, righteousness and sanctification and redemption, 31 so that, as it is written, “Let the one who boasts, boast in the Lord.” (1 Corinthians 1:26-31)
For the children being not yet born, neither having any good or evil, that the purpose of God according to election might stand, not of works, but of him that calls, it was said to her, "The elder shall serve the younger". As it is written "Jacob have loved, but Esau have I hated". (Romans 9:11-13)
Therefore he has mercy on whom he will have mercy and whom he will he hardens. (Romans 9:18)
All of God's chosen elect people will be saved. He shall save his people from their sins. And so all Israel shall be saved. (Romans 11:26 - meaning either all the elect or possibly all elect in Israel-biologically) The false prophets will not be able to fully deceive the elect (Matthew 24:24); Christ's sheep hear his voice and they will follow him and he will give them eternal life and no one will be able to snatch them out of his hand (John 10:26-28). All that the Father gives me shall come to me (John 6:37). Whom he did predestinate, them he called, whom he called, them he also justified, and whom he justified them he also glorified. (Romans 8:30)