Parents!!!

I’m a fourteen year old boy and I’m getting sick of my parents they ground me for the smallest things I wake up nine minutes late or stay up 9minutes longer than I should because I took a shower and I get grounded even though it’s olny for a day it really adds up I get good grades in school a and b I also am on highhoner role and advanced math I go out for sports and I don’t get in trouble with the law. when I get my report card I am proud of my good grades I show them to my parents ands all they say is you can do better my only to get away from stress is to play xbox my mom hates me playing and says I’m addicted . I play for an hour a day all my friends play for four hours and have later bed times then mine is 930. So I have to deal with getting grounded all the time and barely getting to play to get rid of stress. it also makes me mad because my sister can do things ten times worse and my parents don’t care. All my mom does is yell at me. I was thinking of running away or even just stop doing well in school. I’m just overloaded with stress and don’t know what do. I want to get a later bed time and get my mom of my back because of the xbox. Please help I don’t know how to handle it. Sorry that this is in the wrong category but I’m on my ipod and it’s doesn’t do it right