Im trying to do my taxes but they were rejected because my parents claim me as a dependent, how do I do my taxes? what am I missing?

If you can be claimed as a dependent by your parents, then in MY INFO you need to say that you can be claimed as someone else's dependent.   Click your name in MY INFO and go very slowly through the screens.  You will be asked if someone else can claim you as a dependent.  Say YES to that.   Once you have answered the dependent questions correctly, try to e-file again.

If you qualify as their dependent then go to My Info and look for the question that you can be claimed.  Otherwise you will have to print and mail if you are not a dependent and let the IRS determine if you are or not.