I’m 18 and feel this way too, middle school was my peak for friendships, I moved to a different state my sophmore year of high school and everyone already had their cliques and I’ve never really been able to solidify myself into one of them or start a friend group because I suck at socializing. I’m also a Freshman In college now and I sort of have friends maybe I’d say. No one ever hits me up or invites me, I always have to do the inviting or invite myself which I hate to do cause I know how annoying that is to them but I also don’t want to be alone all the time so it is what it is. Hopefully we’ll luck out and get some friends, hopefully.