Why does alcohol affect some people way more than others? (Alcoholism video in description)

I’ve always wanted to know why some people can drink a lot and the worst thing they do is text an ex or dance provocatively and knock out while others completely become a monster and end up in jail for something heinous… like where’s the fine line? Bc I feel like we can all become a victim of this under the wrong circumstances…. Is there any scientific reason behind why some people lose all sense of self while under the influence of alcohol specifically?

The case that comes to mind as a write this question is the Stephanie Melgoza case where the young college girl kills two people after getting behind the wheel drunk and completely disregards what she had done after being confronted multiple times by law enforcement about it:

https://youtu.be/xMHaHwcAPaw?si=TNANwaoG8dPaDoxG