There is apparent confusion between sacrament and sacramental here.
Exorcism is a sacramental and not a Sacrament.
I could not speculate why this is not a library topic, but it seems to be a prudent omission in one sense.
Because of its nature and relative rarity, any detailed discussion of solemn exorcism, i.e., the expulsion of an evil spirit possessing and directing the faculties of a human person, does not lend itself to a general audience, but tends to be confined to those who have been authorized as canon 1172 provides, “§1. No one can legitimately perform exorcisms over the possessed unless he has obtained special and express permission from the local ordinary. §2. Such permission from the local ordinary is to be granted only to a presbyter endowed with piety, knowledge, prudence and integrity of life.”
Even then, great prudence and caution attends those discussions, since they can themselves be burdensome and oppressive for the Christian faithful. While it would be folly to pretend the devil and possession do not exist, it can be hazardous to overly discuss those issues if one is not involved in the matter. In my opinion, it is most important to know that the Rite for Exorcism exists, the power of Christ is ministered through his Church, and that suspicions must be directed to the local ordinary, usually the diocesan bishop.
There are simple exorcisms in the Rite of Christian initiation for adults and the baptism of infants. These are rather straightforward prayers for God to protect the baptizandus from the powers of evil.