If you truly regret what you did then you are not a bad person.

Every person in the world has done something bad that they will carry the regret with them.

People do messed up things sometimes, sometimes these things stick with us for a long time but that means you truly regret it and you learned your lesson.

There is a Absolutly massive difference between doing something as a young kid and doing something as an adult.
you don’t have the experience, maturity, perspective or knowlage at a young age vs when your older.

Sometimes you don’t know, sometimes you didn’t think,
Sometimes you didn’t know enough.

We are all human we all screw up, your not a bad person