Am I overreacting School makes me and my mom fight and I just can’t do this anymore

My mom and I are fighting a lot at school time, but when it’s summer we are not fighting, we do only a few times because it’s impossible not to. Anyways I’m a huge gamer I love games and spend quite a lot of time. But I don’t forget about my future and health, I go to gym three times a week and I learn skills like coding, Ae, Ps etc. my mom hates it that I spend a lot of time at the pc. Since it’s the last days of summer and me an official school hater spend time at pc till like 5 Am. But the whole summer I listen to mom and don’t play games after like 12-2am. I know my sleeping schedule is pretty bad, but hey teenagers my age do the same. Today it was 2am and I was playing the last game of today and only 30 was left until I’m done. My mom didn’t even told me to get up, she just cut the fucking internet wire and now I don’t know what to do. I’m not going to listen to her anymore Because she doesn’t want to understand that games are my hobby and i spend a lot of time recently because it’s the last days and I told her all this but yeah why would my son hate school maybe because the people there are gonna kick my ass if I say something wrong, typical Armenian “qyarts” or maybe it’s that he doesn’t find anything useful to learn there and just goes there and sits on one chair for whole 8 hours fighting with teachers and himself, and you know what I fucking hate myself and my mom and everything and everyone else fuck this