Feeling lonely and overthinking during exams

Heyy ! I moved abroad for two years last semester. I managed to make a few friends here and there but it feels like i haven't got to know them long enough since I just arrived a few months ago, so I still don't know if the friendships are gonna to survive or not. I went back at home for christmas and new year's and had an amazing time with my friends (with whom i feel secure) and family in my hometown. I felt surrounded and loved. I came back in my university city ( in europe) and went straight to exams and exam season. Coming back was a bit of a shock, it made me feel super lonely and isolated like a post happy wave of sadness ( if it makes sense) I haven't seen a lot of people and i'm struggling. I have made a few acquaintances in my classes , but it feels like some group have formed and i'm not part of it, I tried to initiate going out but they didn't really seem receptive, sometimes i don't even know if they like me. I am planning to join my study association though , to meet other people than them in my classes , but i'm also scared it's not gonna stick since i'm having classes in the second and 3rd year it feels like groups have already formed and there's no way to enter those groups (especially mid semester).I'm also so scared to feel this way the whole time i'm in my university city. I don't have a group of friends and i wish i had a solid one where i know we're gonna hangout every weekend , if that makes sense. I do plan on iniating some hangouts with people that i click with but haven't really hangout yet, but i'm scared that it's not gonna stick and we're never going to hangout more. Anyways knowing myself , to feel confortable in a new city i need to have a solid social circle. Here, sometimes it feels like some people like me but like other people more. Whereas i wouldn't feel like that in my hometown. In the beginning of the semester i cried a lot because of loneliness and then i started to meet some people and it got better but now i feel like this sadness is creeping back and i hate it. In general it feels like i'm not really enjoying my study abroad. Anyways i feel like i'm overthinking this and having a lot of anxiety right now because of exams and not going out or seeing people. I guess i just need some hope from people that moved abroad , did a you make a good group of friend eventually even though you felt lonely in the beginning ?