Nothing has worked I've lost a bunch of weight got some muscle and still i dint have a girlfriend pleas help

nothing is working I lost alout of wheaght got some muscle and im very nice and play sports and still no girl likes me. its sad im walkin by all the girls at school and not one of them want any thing to do with me all the other freshmen have girlfreinds why cant I my best freind even has one and he disrespectfull to every body. there is this girl i like alot but im afraid to ask her out cause im shy and i only see her once on a school day im afraid that i might get gang beeten by her boyfreind if she has one I dont know and im afraid of being laphed at so can you people give me some advice.