I always got admired, but never loved

I always got admired, but never loved. In every friend group I have in school and in college they admired me a lot, for example "you are so informed, know about so many things" like I had the image of a smart guy who is always helpful.

But I was always the third-friend to most of them. the only best friend I have from school, also no longer friend to me, we were best friends for years. He started to avoid me and eventually we stopped talking.