I need advice from boys!!! or girls who knows guys please help!?

im 19 years old and i never had a bf i have been on dates and stuff but im wanna relationship!...im attracted to dark skin guys or nerds or musicians/poets with a sort of bob marley/shwayze/hippie look BUT i always attract guys who are either white/hispanic/indian or guys who r half black or guys who think they r God's gift to women and superficial stupid guys. no offense but i prefer african americans yet they NEVER tlk to me idk if its because of my look...im cuban and haitian w/green eyes and everyone says i look like tyra banks or a stuckup model..im sick of hearing tht and im sick of tyra i DO NOT try to mock her UGH!!!. i am into fashion but i shop at cheap places like forever 21 wet seal and H &M nothing fancy and i like to show my legs but i am not a stuckup conceited bimbo whore model and i dnt even wear makeup!..anyways i always try to tlk to the guys im into but they never think im interested in tht way...it kind of hurts my feelings :( and i want to know how to show them tht i am trying to be more than friends so please approach :D...how can i do this without changing me? and i do have personality so whats wrong??