So there is a park near where I live and I’m walking back to my home, and there is a guy insulted me, saying ching chong. So I confronted him asking what the fuck did he you say to me? He couldn’t respond back because his black friend covering his mouth. Fast forward today, it was a long day so I decide to go to the park to relax, on my way back home there is the guy who insulted me so I stare to him, and he glance back, I was gonna let it go but then a friend of him shout selfie. And the guy stand up, and said what up? I ask him what did you said to me last time? He didn’t say nothing, and so I start walking and say look how fat you are! And then all the sudden, they start following me. They are like 8-10 of them around 16-18 years old. I know I could easily beat up the guy who insulted me. Knowing that I lift and I’m taller and more fit than him considering I’m Asian and I’m 22 years old. Then when I’m 40 meters into my home, someone whistler and I went to them, said what? They were like we just want to talk, I know if I go with them it gonna be a fight so I said no I don’t want to be in trouble with cop, I know I kinda hesitate cause I don’t want to have any negative police record or jailed (and butt rape). So I continue to walk, they circle me and his tall friend around 1.90m (I’m around 1.75m) not really muscular block my way so I pushed him hard and almost felt to the ground. Next thing I know 4 of them is throwing punches to me, so I cover my face. A guy shout “stop” and then they distance themselves to me. So I start to running toward the guy who insulted me and they start running away I could have follow them and continue the fight but then hesitate to go all-in to the guy and decide not to. So I went back home and nothing serious just a bump into head and nose bleed which is due to the punch. After hearing my lame story I don’t know if I go to the police station and file a report or just let it go, or should I just go and have my justice into my own hand(no not in American way with guns, note I live in Europe) and ask the guy to 1 on 1 me next time I see him. Should I abandon the park and avoid it at all cost and let go of those bastards? What should I do! thank you for the advice!

UPDATE : I actually went to the police station today and said they said that next time I pass by i need to call them when I see them so I can Identify them, and point out who did it. Also I asked about self defense, they said I couldn't do much because if they got hurt bad I have higher risk or being arrested or worst being jailed. Just because they're minor. FFS