I have a question, is masturbation bad according to the bible?
There are no explicit metnions of masturbation in the Bible. There is no clear Bible position for or against masturbation. However, it's perfectly natural and most people do it. It's nothing to be ashamed of, nothing to ask permision for.
I feel like the root of your question is so that you know whether to feel guilty or not, don't feel guilty. You are perfectly normal.
Not only the Bible but to your health too.
Guess what... If your hands can get you to jerk off, would you be able to hold it inside the kitty???
That will frustrate you more, try reduce the urge gradually ?