any tips on how to make friends...

i really don't know what I'm doing wrong but I'm not able to find my people..it's already been a semester but I'm mostly by myself all the time..I'm comfortable in my company but it gets really lonely after a point. it makes me really sad to eat all by myself when I see all these groups and realise and I don't even have one person I can depend on. even when I go out it's mainly by myself because I don't have people to go out with or even hang out with after classes..it's just classes to room and back and gets really lonely:( i have medically diagnosed anxiety as well so when I get down it feels really really bad and I often drive myself into panic attacks too..