Please Help: im in high school, and i have enemies, what do i do about them, theyre ruining my year! D;....?

so ima sophomore girl in high school. i have been driving to school since freshmen year, in a little used volvo(i have a license) anyways recently, well like 4 months ago actually, i crashed(bumped) into another girls car, i was going like 3 mph at most, so i barely even left a scratch on her old toyota(which already had many other scratches-_-) The girl who i crashed into happened to be one of my close friend's friend. So later that day i got a text from the girl from my friends phone, complaining and complaining with an attitude about the scratch(btw she didnt have her license, but i didnt know til barelly a month ago)..anyways to make her be quiet i paid a small amount, the next day, for the damages (like 50-75$ or something like that). She didnt even say thank you.And she turned my close friend against me so she doesnt talk to me anymore:/..and Ever since then the girl hasnt liked me(she gives me dirty looks etc.) o.O idk why, i mean, i paid for the damages, i dont care if the girl doesnt like me tho, cus i dont wanna be her friend anyways, but what bugs me is that she turned my closest friend against me and now she hangs out with her all the time... anyways like 2 months ago a car parked next to me at school, so afterschool as i am walking to my car, i see the people who parked next to me open their door and hit the side of my car -_- and they just left the door open, they didnt even close it or say sorry and i was standing like right ther waiting to get into my car, and since i was outnumbered by the ppl in that car, i just got in my car, after they eventually closed their door, and i didnt say anything and jus left. So a couple days ago i realized something, the girl(whose car i hit) talks to the people who hit my car with their door. She talks to them Everyday. So im Positive that she told them to do it on purpose u_u...i am so mad right now, i dont know what to do, i have to do something, i cannot let all these seniors step all over me and push me around. What should i do?! What would you do??