It sounds like you were a bad kid, but maybe you won’t necessarily be a bad adult given this introspection. Something to bear in mind is that kids’ brains and minds aren’t entirely developed, often causing that kind of bad behavior- maturity is a real thing, and it sounds like you’ve begun developing it.
I think most people have things they regret from childhood and teenage years. I suppose the key is to be self aware and try to live in line with who you want to be as an adult.
It’s kind of crazy to think someone will read all of it too. Probably.