It is too late for me, but I believe it is for the better. If I made friends with the kind of classmates I always had, I believe they would have bad influence on me. For example, last year the class' main character, 17 at the time, found someone's shoes in locker room, unattended. He decided to piss into them. Also popular is weed, vaping, alcohol, making mess in places like McDonald's (like mixing a burger with cola and spilling it all over the table...), damaging school property on purpose, etc..

While not friends, I do have good memories about some teachers that will last. My elementary school teacher was quite nice. She would always listen if I wanted to talk about something, even if it was relatively nonsense. If I found something interesting, I was always hyped to tell her. Basically like a mom should be.
In middle school, my physics, chemistry and math teachers were nice.
You could always have some conversation with physics teacher, whether school related or not. He always kept happy mood, at least on the outside.
The math teacher did similarly, but I also appreciate how hard he tried to get us to learn at least something. He got to the point where he shown us the exact questions that were to be on exam. It didn't help. Now I feel quite sad about him, you could sometimes see him on the verge of crying. Especially during and after the COVID-19 lockdown. He tried hard to make math more interesting.
Chemistry teacher was also nice. I could talk with him about problems I had at home. Being able to tell about your problems to someone is nice. Also, when the COVID-19 lockdown came, we had online learning. I didn't have internet access, and only got an old laptop with broken keyboard from neighbor and I didn't have money for a replacement keyboard. It really surprised me, but he gave me money to fix that laptop. I don't know if he also intended that, but it made me feel like I had to put more effort into studying. I won't forget that.

Most of my high school teachers are nice though. Actually there's just 1 I don't like. That is a nice change since till high school it was just the 4 aforementioned that I liked.