Moving out( kinda long sorry)

So let me start off by saying i don't wanna sound like a bitchy teen going off on her mother but i can't stand her im 19 and she constantly checks my bank account she won't give me all the keys to the house I've been trying since high school to get all the keys to the house she says it costs too much but she goes out and buy her expensive things all i ask for is a key and im not a "bad kid" i take care of her and my little brother when she is in and out the hospital, cook wash clothes pay her money i gave her 700 for her birthday and she stil asked to see my bank account when she hasn't given me anything i don't ask for anything money wise i pay to get my hair done, buy my textbooks, buy my food etc. Whenever something money related come up and i ask why you need to see my bank account its always because i can and i want to if i say anything back to her its a whole argument and im selfish and a bitch and she doesn't need me and she wanna run away basically im sick of her shit and want to move but idk how to move out i never done anything independently before what would i look for how did you guys go about moving about?