In my case it's not only the loneliness what bothers me. In the end, I've probably been alone my whole life. There was no one really close to me. Also, when I had some "friends" they started acting unpleasantly towards me and then stopped to communicate. Moreover I had no option to talk about it with them, so even today, I can't find out what happened. Just to be clear, this happened more times with many people. Recently, with people I care about. I feel used and betrayed.

I haven't thought much about joining a chat here, I'm still kind of new here and besides, I tried to focus on solutions outside of online space more.

Since you mentioned my familly, I must say they are loving, but they can't support me. They tell me that I should focus just on my studies so sometimes, it feels that my problems are unimportant.

I've heard of meetup, but not really about the events there. Unfortunately, I must say that the events I found (I looked for Brno, as I study there and I hate Bratislava) were not for me as two of them are arranged for a specific group of people and one presentation.
As I searched for groups, I must say that in Brno, there are only groups concerning the topic of my studies. Every group has a different focus. However, these groups are not for someone who is still studying, but for people with experience. I wouldn't be able to bring much into discussion.