Why is people bullying? what's the target?

The target by my knowledge, is that in the result of bullying the victim is usually someone who the bully knows very well or has envy about.

Some bully to make themselves feel better because they have been bullied. Others many bully others because they wanna think they are the bad popular kids like it’s something cool when it’s not because some kids have shot up schools or have killed them selves because of that one or two people bullying them. Those kids are causing mass shootings or suicides because they think it’s fun or they want to let their pain from being bullied out on someone else so they feel what they felt when getting bullied. It’s basically a cycle and someone needs to break it.