I feel like somethings wrong with me, guys(well the ones that i like) don't like me and its kinda depressing a?

I never really had a bf so u can say im romantically illiterate.I'm kinda picky and i guess i get turned off easy by certain things but with guys i feel that guys i like they don't really notice me or don't like me becuz they think im weird or crazy and ppl tell me to wait, but my patience is getting pretty thin. I wud like 2 be more social but I dont want 2 look desperate or like a weirdo. HELP ME