I'm thinking of running away from my family and trying to cut contact
Why do you want to separate from your family?
I think that my parents are controlling me too much, I can't live with them any longer
If you are able to adequately support yourself, there is nothing wrong with getting away from your family. If they are negatively impacting you, it could do you better to get away.
But I don't want to be taking care of myself, I just want to be free again. The only way I can see this is going away from them even still.
A toxic household will only bring you down, I have been there. Living on your own might be scary but for what it's worth you will be happier with no one else controlling you.