I am 18 and i want to get my aunt off my bank accounts

Depends upon how the bank accounts were set up.  If the aunt set the accounts up as joint, you may be able to withdraw the cash and set up your own accounts.  If the aunt set the accounts up as a conservatorship, you may not be able to do so.   I would contact the bank and determine what you could possibly do. Then I would contact a local attorney to see what legally could be done.