Adults understand you but some of your peers don't? That's fine man, don't stress over some people you don't even knows opinion. Almost all those people you want to approach want to be talked to equally as bad and they are no different then you, they don't find it particularity easy just to straight up walk up to someone and try to become friends, and man its not easy it took me some time to develop social skills to. I think its kind of strange that you want to confront all these people and me and some of my other friends just be our self, not trying to impress anyone. You just need to be yourself, if you want to meet new people sit down at a different lunch table, meet some of your friends friends, and just being yourself. 2 good friends don't even sound that bad to be, i know people that don't have any, i got 3 really good friends and a brother and you better bet sometimes its not easy sometimes, i have allot of friends that im cool with that i know and talk to, i lost count.