Loneliness is getting to me

I’m a late 20s undergrad and I feel like everyone I try to make friends with thinks I’m weird for attempting to make friends with them because they’re younger (they are the only people I tend to see on campus). I moved here completely alone and I know p much nobody. This quarter was so lonely. Furthermore, I’m bisexual and love having platonic girlfriends, but so far all of them seem to think I’m hitting on them, which is prolly extra weird from their perspective given that I’m older. In general I’ve had a few experiences where people were overtly mean to me for being older. One time at a bonfire a chick was like, “ewww he’s so old for an undergrad.” To put things in perspective I’ve been suicidal and addicted to drugs a lot of my life. COVID was such a rock bottom that I started working my ass off and fighting for my life and that’s what got me here (sober now too). Am I cooked for trying to get my undergrad so late in life? I’m worried all the isolation will push me back into a tough spot, and my major is ROUGH. What should I do? Any older undergrads here feeling the same way?