Hi, I had to join up as I felt so compelled to reply to you. I'm in a similar position. I understand the feelings of shame, and feeling left behind when everyone else's life has moved on. I was a young carer, this started when my parents got divorced and my Mum then leant heavily on me. I ended up spending my 20s isolated, unemployed (not for lack of trying to find work, I was desperate for work) I walked on eggshells around Mum's moods and was desperate to leave home to get away from this, but I had no money.
In later years when I managed to get full time work, I mentioned moving out. My Mum and other relatives were very upset and angry with me, and gave endless guilt trips. So I stayed to keep the peace.
I've never had a social life, so no chance of relationships, and will be too late to start a family of my own. I could be looking at another 30 years of this. By which time I'll be in my early 80's, in goodness knows what state of health.
OP please look into building a life of your own. When you say your parents don't seem to want you to move out, it definitely sounds like they've you lined up to be their carer. See what financial help you can get for your health conditions, I don't know if you'd get pip or anything like that. Did you get an assessment for social housing where you might get points for your health. Take stock of your finances and see where you can make savings.
Also if your parents need to go into care, where will you live? Are you named at all on the house?
Good parents who care about their children shouldn't refuse Carers if they need them. It's selfish to expect your child to do all the caring alone to the detriment of their own life. If you had a child, would you expect them to do this? Please be aware too that other relatives may ramp up the pressures on you to continue caring, living at home, and possibly to give up work, especially given the situation you mentioned with your aunt.
Have you any support outside of the home? Friends? Carer support group? Did you ever get a Carers assessment? You can get one from your GP surgery or social worker.
Please take care of yourself. I'm still trying to dig myself out of this mess. I wish you the absolute best of luck in building a lovely life for yourself 💐🍫🍰