I don't know how friendships form in your culture, but in my culture, when I was in school, you would find a lot of people forming friendships in groups. I used to hang out a lot with my group, that consisted of like 12 people. As I grew up, I found that some of them are just toxic and if I don't like some of the people of the group, I'd have to pretty much leave everyone. That was really hard for me, and it's worth it.
Thank you for your reply though.