You're not going to get any support because this isn't a support group.
No one can help you with anything because you chose to delete the statement about which state you were in,
however, regardless of the state, children can't summarily change their name without parental consent. However, if you want to be "independent," changing your name isn't how you do it. You do that by getting a job (good luck with that at 13), finding your own apartment (good luck with that at 13), paying your own electricity (good luck with that), water, gas, medical and dental insurance, your own food, hygeine, internet access, clothing and the rest of the stuff (good luck with all of that).

