What should I do in this scenario? TW Abuse.

Trigger Warning: Abuse mainly
I don't know what to do, because it's family and I don't want to paint my family as bad, but I think what im about to say just might. I'm scared of my family, and I don't feel like I belong in this family. I only really remember bad memories, with the exception of one or two from my childhood with my family. Even in recent times, it's kind of hard to remember good times in my family, because all of my memories have to deal with family members arguing, getting into physical fights, and family members trying to kill one another, quite literally. It doesn't help that I've been told that I'm faking my mental illness, or anything that I get worried about with my health tends to get ignored, so I don't really do self care, because I don't know how to take care of myself in that sense. That being said, I have been hit and stuff like that, because of the fact that I wasn't passing one or two classes and a family member has threatened me before, and I really want to tell my therapist, but at the moment I don't have enough money to move out, as well as I want my mom to come with me to, because they kind of manipulate her as well, to an extent, and I get worried about her a lot. Not only that, but she's the only person that I feel comfortable coming out to as bisexual and trans (trans masc), but I just don't want her to tell anyone else in the family, as they aren't as accepting. I'm also 18, so I can leave at any moment, but like I said, I don't have the funds at the moment. I really don't know what to do, and being in the house that I'm in is really mentally draining, and I'm just tired. Also, sorry if this wasn't in the right forum.