Hi. I have a roommate and she is very toxic I mean

Hi. I have a roommate and she is very toxic I mean she makes me feel depressed and and me feel like she is above me I feel lowly around her and I have told her about it but she keep malice with me because of that she don’t want people to tell her what to do but she like to boss people around and tell them what to do though she don’t use to do it with our other friends cuz they don’t take shit with her so she do it with me cuz of my nature of being quiet and I don’t usually express how I feel
Most times without knowing what I do u will start acting cold towards me and I will beg and ask her what I did and she won’t talk to me until I involved our other friends then she will that giving excuses it has now get to the stage that it now affect my mental health and feeling depressed
I don’t know what to do and I want to treat myself