Y dont guys like me wat do they like?

I get told that im pretty by my friends and other ppl but yet I can NVR get a guy I like to like me y is that ik im not ugly so is it my personality? I mean I could kinda c y I cuss laugh at pervy jokes and make pervy jokes im a smart *** and some ppl call me negative(actually im just realaistic but watev) I dont evr really show my sensetive side im more of the tough tomboy type but if guys really got to kno me im not always like that I can b sweet when I want to.