You can't know for sure that no girl ever had a crush on you. Sometimes, we just don't know! I'm sure the guys i had crushes on in school weren't aware of my crush. I never let them know. I remember when i was in 9th grade i had a huge crush on one of the juniors in high school. I went to the Junior High but every morning without fail, i'd get off my bus at school and stand around waiting for his bus to go by so i could see him, and i never missed one of his basketball games... he didn't know this, either.
You're good enough. WE ALL ARE! Put yourself out there. Meet new people. Look at Meetup.com for your area (it's free to register) and meetup is a social website where people post activities so they can get together to share like interests. Some cities have a lot of groups, others not so many, so you'd have to check.
Join a mixed bowling league or some other sport where there are both guys and girls. What do you like to do? You could even join a mixed dart league?
You can also google "how to meet women" and also "how to talk to women" so you have some idea what to say if you're not sure.
You can do this (there are also dating sites and tinder)