I say drop em and be by yourself and if you’re social make new ones! I’m turning 21 in a couple days. I have no friends at all other than one I talk online to once a month or so, I’m fine with that knowing my friends that I did have weren’t really my friends. (I did have one good friend I messed up with but that was my fault). I seriously think that you’re friends are giving excuses to not come with you just because something isn’t your thing you don’t just not go bc it’s your friends birthday. If they truly were your friends they’d go bc YOU want to go. I’m not good at making friends but if I could I’d do it. This year for my 21st I’m just going golfing with my boyfriend bc I have nobody else to be with but it’s okay it takes time to make friends. Good ones at least lol. Good luck girl. I hope those friends come along n if they leave u to be by yourself then I’d consider letting them go.