moving out

i’m going to be 20 in a couple days and quite frankly i feel like i’m overstaying at my parent’s house. i really need to move out bc it seems like what i want for my life is a lot different than what my parents want and it causes a lot of problems between us. and it doesn’t seem like they’re ever gonna change their mind. i feel like if i stay i’m just gonna succumb to doing whatever they want from me regardless of if it makes me happy or not and that’s not what i want at all. so the best thing to do is that i move out but i’m not sure how or where to start. my older siblings still live w us so i can’t even go to them for help. any advice for me?