Both "depravement" and "depravation" are valid English words. However, "depravation" is more common in English usage overall than "depravement", which is another word for depravation.
"Depravation" refers to the state of being morally corrupt, wicked, or behaving in a morally reprehensible manner. It is related to immoral or evil behavior and describes a condition where someone or something has deviated from accepted standards of decency or virtue.
For example, if a person engages in heinous criminal acts or shows a complete lack of empathy towards others, they can be described as exhibiting depravity or being in a state of depravation.
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Reference:
https://www.collinsdictionary.com/ko/dictionary/english/depravement