How to deal with a toxic mom?!

Alright it’s a story that already told here a few times but here we go again.. a few months during the summer my mom has send me somewhere else to live (she basically rented a room for me in a house where I lived with roommates/strangers.. for about 4 months, like August to December) and recently back in late December I moved back with her and noticed a serious change in her behavior like she became toxic, she wasn’t like that before, she controlling, demanding, even psychically/mentally abusive towards me, why did she change like that or how could I escape this situation, I’m 23