It is not fun my dear.
It is the trouble for others if you do not change your bad behavior you will left alone nobody will like you.
This is not fun at all the people who do like this are called sadist who give pain to others and enjoy out of it.
Pray 5 times &read Quran-e-Pak with translation.
Go to those whom you beat in the past, say sorry and promise that in future you will not do it.
For fun get small story book and read for your friends in the free period daily one story it will make your image good.