I ran after him myself since no one else was around to help me do it.
Why would you run after him?
I'm just a stupid person. I'm too kind and naive. That's why I have been treated badly by other people.
Even though you might think it's harmless, it's actually wrong to be so self-deprecating and critical of yourself. Calling yourself stupid will lead to poor self-esteem and other mental health issues. If you are having trouble standing up for yourself, you should work with a therapist to find healthier ways to respect yourself and interact with other people.
That's why I am trying to be tougher in general which is why I was chasing him down so that I could beat him up.
Even though he might have done something to hurt you, you shouldn't want to hurt others physically. That would get you into more trouble than you are wanting. I would talk to someone about what has been happening so you can figure out how best to handle it.