Hello DaX11: I'm sorry you are being treated so poorly. There's really no excuse for how your adoptive mother is treating you. Unfortunately, there may be little you can do to change her either. Perhaps other members, here on PC, will have some suggestions.

I don't know if you see a counselor or therapist, or if you are in a position to do so. But, from my perspective, having someone you can talk to about what you are experiencing, is probably something that would be important in your situation. A counselor or therapist could also possibly help you to figure out ways to work around your adoptive mother's negative attitude & comments.

Beyond that, hopefully, being here on PC can be of some comfort & support as well. Sometimes just writing about what you are experiencing, & reading other members' replies, can be helpful.