I need help on being more outgoing?

So..hey everyone, I’m in grade 10. Last year I didn’t go to any school dances or anything, because the dances aren’t just for my school, but the whole community with 5 schools and Iam also shy. This year my goal was to become more outgoing, last Friday was a neon dance but I did not go. The question is how can I be more outgoing? Also the thing is when I usually go to dances the girls always leave me alone and I just go and sit and watch everyone else have a lot of fun:(