Why am I bullied?

Well to be honest it is probably because the person that is bullying you is insecure about them self or there is something going on at their own household for example: they might be being bullied by a sibling or even their parrents. This is are the usual reasons but there are also reasons such as they are under pure pressure or maybe they are doing it to just look "cool" those are all the reasons I know but I am not a child pyscologist.