self-loathing is technically a type of sin… but that doesn’t mean peoples conceptions match the teachings (they often don’t).

CCC 405

“ Although it is proper to each individual, original sin does not have the character of a personal fault in any of Adam’s descendants.

It is a deprivation of original holiness and justice, but human nature has not been totally corrupted: it is wounded in the natural powers proper to it, subject to ignorance, suffering, and the dominion of death, and inclined to sin — an inclination to evil that is called “concupiscence.”

Baptism, by imparting the life of Christ’s grace, erases original sin and turns a man back towards God, but the consequences for nature, weakened and inclined to evil, persist in man and summon him to spiritual battle.”