In college, I didn't find anyone who had the same interest as me, but I talked to my peers but about their interest which are superficial to me and dull like " studying, football, religion ,normie stuff in general..", I reached a point where I stopped to talk to them, I think I lost my voice or smth for period of time and felt alone and robotic, but once I found people online who have same interest as me all over the world from Russian, turkey, France, UK, USA, Italy, Brazil, Egypt, not just that but have same feeling as me too. I also discovered people like me who lived in the past and died long ago, I literally never felt alone after that despite the fact that I never meet them in person.
I hate to admit it, but loneliness is unfortunately harmful to us.
In the long term, a person needs another person.
Of course, nowadays we have the Internet, so we have easier access to other people.
Therefore you are not completely alone.
For example, now you have contact with people on this site.
Without any contact with another human being, you would go crazy very quickly.
Of course, the Internet cannot completely compensate for physical contact with another human being.
Sometimes you need to talk to someone.
Sometimes you have to joke with someone.
Very limited contact with other people may, for example, lead to social phobia.
It is a disease.
I know this because in the current situation I have very limited contact with other people.
I see changes in my behavior and worsening mental problems.
People need each other.
I think loneliness is a modern disease, early humans didn't have language, I think they used body language to communicate, therefore, they had little entertainment dependency on each other. I still feel connections between humans around me without using language.