Playing football or any other sports looks good to college admission committee because it shows you participate in other activities besides school work. But playing a musical instrument, helping out the community, or any other hobbies you have will also achieve the same effect. So you don’t need to play football if you don’t want to (sounds like you are not too fond of football)

cuz by them helping would normally mean scholarship which would be taken away if you stopped playing for them, and to get one (unless you get one from usc) you have to be elligable academically by the school anyways

so you might want to stay with focusing on your academics more considering football, especially at the varsity level, takes a lot of time and energy everyday except monday

so you might want to stay with your academics and apply to the colleges you would want to go to that way, or play football, keep the great gpa (colleges love football players with gpas 3.4 or higher, 3.0 and higher is great) and then apply to colleges and send in a highlight take to them as well