Have you thought about renting a room? That's what I did and I'm so thankful for it. The rent is different depending on where you are. Mine is 400-600 dollars. It you can rent an apartment with friends. I would stay until I made other plans. But only use the house to sleep.

Work as much as you can (what I did) even two jobs on your break times from school.

Thats what I did stay out the house as much as possible (for your mental health)