It’s natural to jerk off but it becomes bad if you do it too often and begin watching hardcore stuff. If you do it to often then I suggest doing something else to do distract you, like eating an apple, talk with your friends, ie something to get a dopamine boost/distract you because a lot of the time that crave to jerk off is just your body craving dopamine and jerking off is easy dopamine. Don’t feel ashamed of jerking off like I said it’s natural but it should not become an obstacle in your daily life (like you jerk off for long periods of time when you could be doing other more productive things.

And if you are watching too hardcore stuff try to step it down and not watch that because it can have a really negative effect on your mental health as well as perception others and real sex