I think if you don’t have one you should get a job, not sure if you’re in the us but there are always a ton of programs to help financially especially with Covid. Save up and make a plan to leave. I wouldn’t let your parents know what’s up but I think it’s best you leave the situation as honestly, that relationship is toxic and you’ve been your moms therapist since you were 9 and that has 110% taken a toll on you. You should get therapy if you haven’t already. Get a secured credit card use it for your bills and pay it on time every month so you can get a place and a car (again if you don’t already have these things) look for low income programs that can help you get into a nicer place with a low rent especially where you’re young. If you have friends who can be a roommate get a roommate. Right now just take care of yourself and doing what you need to do to leave and get yourself in a better environment. Save up and organize you got this and I hope the end of your time there is as easy as it can be.