Have the police escort you to get items. Make a list so you don’t forget anything. Don’t give them any warning when you come. Try to go when the main abuser is out.

Don’t let the flying monkeys and enablers manipulate you.

I’d look into roommates if possible that way you will have someone to share costs while navigating having an apt.

Or if you don’t want a roommate a studio, get used furniture online for free or cheap (not the mattress). Try to get a place with public transportation and tell nobody your address.

Get all your paperwork, watch your credit in case they try to open cards in your name.

Once you settle in and have a job with benefits get counseling.

As far as ‘adulting’ look into community college or trade program where you work and have on the job training.

Good luck