Your age at the end of 2020 is what matters--not how old you are now or what your living circumstances have been since 2020 ended. Your 2020 return is only about the circumstances in 2020. At the end of 2020 could you meet the criteria to be claimed as a dependent? If you do NOT meet the criteria to be claimed as someone else's dependent for 2020 then you say on your own tax return that you cannot be claimed, you use the recovery rebate credit to get the stimulus money yourself, and you mail your tax return in. The IRS will process it. Then they will sort out whether your parents made a mistake by claiming you---they might have to pay back the stimulus money they received.
First---do you meet the criteria to be claimed?
https://ttlc.intuit.com/community/dependents/help/when-do-i-have-to-answer-yes-to-being-claimed-as-a...
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
