Best friend changing (AITA)

I’ve made so many posts about this friend on this site and the general opinion I’ve gathered is they’re kinda evil.. i have a pretty shitty complex where I blame myself for everything so I just need to know if I’m the ass here. So they’ve started to sleep with adults(we’re minors), smoke and so drugs after meeting a friend.. but I’ve been pretty rude myself everytime they tell me what they’re going to do I try everything to convince them not to and kinda say things like calling them disgusting Idkk also lecturing it kinda comes in outbursts of emotions to tryyy to convince them not to.. tbh now looking back I was trying to control them a bit and shaming them was my method to try to convince them to stop.. (I have apologised and talked about it with her!!)

I’m trying to take accountability because I feel like I’ve been a prick but they’re making me feel so sad.. like idk how to explain how she acts
(you guys can look at my past posts to see more abt them)