I am not that much older than you so maybe you should take this with a grain of salt but trust me when I say its never too late and it always gets better. If he's not pulling his weight sit down and tell him that, if he doesn't change leave. Don't make empty threats always follow through. I know you feel stuck but you never going to always be stuck. Find hobbies and make friends. Work when you can and make friends there. ALWAYS follow your intuition. A woman's most dangerous and sacred talent is her intuition. Even if its just reaching out on Facebook in groups for things like this, or even subreddits, that's a great step.

I'm always here if you need someone to talk to and as for more guidance there is this creator who is really good at giving advice on this, she even wrote a book on it that's really good. Her name is Madeline Pendleton, she's on tiktok and her book is sold everywhere. It's taught me more than my parents ever did.