I'm feeling the urge to move away from home.
Why would you move away from home?
I want to prove I'm an adult
It's fine that you want to be independent. It's common when we become an adult.
I'm not an adult yet. I'm only 20.
But you are, being in your 20s make you an adult. If you want to be independent that's perfectly fine. Just understand independence comes at a cost.