How to deal to deal with the feeling of jelousy in college.

I feel some kind of jealousy or uncomfortable feeling to compare myself with the people around me in college. and sometimes feels unsafe because of them. Most of the people just go away from me and i don't feel like i have much friends at college now, but those people.. I feel sometimes uncomfortable around them and cause everyone likes them and I feel like they don't like me, I feel very less when they are in class cause as they they entered they cheered up all class and I feel like a side character at that time, I don't wanna feel that feeling, I do want to see everyone happy but I also don't want to feel that uncomfortable feeling (jelousy, if it is that). I feel like i just have one or 2 friends whom I talk with and not any partner at college.

It's a second year of college and i still don't have any girlfriend, I feel that most of the girls hate me as I get rejected again by a girl. I don't know how to do nd a girl who loves me.