Catechism of the Catholic Church | THE SEVEN SACRAMENTS OF THE
1210 Christ instituted the sacraments of the new law. There are seven:
Baptism, Confirmation (or Chrismation), the Eucharist, Penance, the
Anointing of the Sick, Holy Orders and Matrimony. The seven sacraments
touch all the stages and all the important moments of Christian
life:1 they give birth and increase, healing and mission to
the Christian's life of faith. There is thus a certain resemblance
between the stages of natural life and the stages of the spiritual
1211 Following this analogy, the first chapter will expound the three
sacraments of Christian initiation; the second, the sacraments of
healing; and the third, the sacraments at the service of communion and
the mission of the faithful. This order, while not the only one
possible, does allow one to see that the sacraments form an organic
whole in which each particular sacrament has its own vital place. In
this organic whole, the Eucharist occupies a unique place as the
"Sacrament of sacraments": "all the other sacraments are ordered to it
as to their end."2
1 Cf. St. Thomas Aquinas, STh III,65,1.
2 St. Thomas Aquinas, STh
The Church is a body, the Mystical Body of Christ. With this understanding, it is easy to see why not all are required to receive all the sacraments, with the ones received coming at different stages in one's Christian life, even when all the sacraments are vital for all the faithful, for the building up of the Body of Christ. cf. [Ep 4:1-16 (RSVCE)] and above: the sacraments at the service of communion and the mission of the faithful.].
For the individual, the sacraments one must (e.g. the three sacraments of Christian initiation) and can receive (e.g. marriage, holy orders, or anointing of the sick), ought to be received at the proper time for their Christian life.
Please note that in Catholicism, a lay person can be called to single life i.e. not married, not a priest, and not called to religious life.