Can you pick up a 2nd job part time maybe ??? Would decrease the time your at home while also helping you gain money to move out.
It's always hard be an adult and your parents still treating you as a child..
So best to scramble and get your own phone and plan through whomever you choose, they wont be able to snoop on it. Passcode protect your phone and computer. How are they getting into your safe?
I personally would bust my backside and focus on moving out .
Good luck