everyone is calling me a bully and putting me down. Am i a bully?

So me and this kid were about the same height and weight and we were air sparring and i accidently hit him and it wasnt that hard. I tried to shake his hand as i felt super bad and while trying to shake his hand he grabs my hand and slaps me super hard everyone heard it. So then i lost my cool and told him that were gonna fight after school. But he didnt want to fight. so i said whatever and told him that were gonna fight and if you dont show up then its done and he decided to show up. He said he never wanted to fight so i said if you dont want to you dont have too. But everyone was instigating it. and everyone circled me and him and we had to fight. I ended up winning and everyone is calling me a bully. i feel bad tho cause i know he didnt want to fight and i feel like the pressure forced him too