I know saying I want to eat breakfast in my own kitchen sounds ridiculous but I meant it as I just want to be my own person, and not have to live under my parents rules (not that they're strict at all, very relaxed actually, but of course we have different ideas of how some things should be done, so I don't want to have to do it their way, i just want independance).
I don’t mean to sound a condescending twat at all but have you any idea of all the bills, rent, food, utilities, internet, tv licence, etc? Also would you not be lonely.......if you’re planning on doing this at 18yo But doing Open Uni you won’t have friends in your cohort, you won’t get the uni experience. You say you have a (part time) job, it’s unlikely to pay enough to maintain independence for three years. The open uni will still be a full on, full time course, so not something you can work full time and do.
Go to some virtual uni open days and talk to the finance people, talk to college advisors. With a maintenance loan, student overdraft and fingers crossed some part time work you could maybe afford normal uni. You should be able to, even without parental help, esp if you get the full loan.
But you might just find being 18yo and finishing college makes you feel more independent. My daughter is 19yo and goes to uni but lives at home. She has a part time job and a car and says those two things have been the biggest things to making her feel grown up/independent. Ok, she still has to share the house kitchen but I really do try my best to treat her as an adult.....with the added bonus I make her pancakes for breakfast!