I need to get into buildings late-ish at night to study (8/9pm). Will the buildings be closed or will be ID be able to let me in?

I just transferred here and my roommates all know eachother and constantly laugh/talk behind my back. It's really ruining my mental health and I really need to find another dorm. Before you say anything, no, I can't talk to them. Everytime I try to they just look at me weirdly and go "okay...." and gossip about me in a room together. Any suggestions on how to change rooms? I really need some advice on who to reach out to. My CA isn't doing anything and keeps telling me to talk to them. Any advice is appreciated.