Nc- My Mom Claims Me As A Dependent On Her Taxes But Contributes Nothing Towards My Living Expenses And Does Not Allow Me To Get Marketplace Insurance

My mother claims me 21F on her taxes yearly for tax credits (I suspect) and each year she says she has to claim to the government that she makes more than she actually does to even qualify for marketplace insurance. I’ve been having a lot of serious health issues lately and I’d like to enroll myself in an insurance plan for 2025 before the December deadline but she says she will not be claiming that she makes more than she actually does this year so I will not be able to get marketplace insurance. She does not contribute at all to my living expenses. I only have a low paying part-time job because I am a full-time student. What is the best way for me to get insurance in 2025? How should I proceed?

I’d like to start filing my own taxes but I never have before and each time I mention that my mother insists that FAFSA will no longer cover my tuition if I were to file independently (even though I make scraps for income)

Please help! Sorry I have absolutely no knowledge about any of this.