Man I somewhat but also kinda don't know how you feel. Now don't get me wrong, iv got plenty of female friends. And plenty of girls have had crushes on me. But it's all the wrong ones.
For you, just as a guess, Im guessing girls have found you wierd or something. Have you tried the reverse friend zoning? (It's when you act like you want to just be friends then just befor you get to friend zone you tell them you like them) it has about a 75% success rate. Or talking works.