Just go to some people's profile, u can find a friend list on their profile. Some choose not to show their friend list also, But otherwise, u can just go clubs and friend request people whom u trust
How do I find more friends on here?

What I like to do is be mean and confrontational in chat, especially if I lost and the other player won't immediately rematch. In ~2 years I made 1 friend in total, so maybe don't take advice from me on how to make friends on chess.com

be active and friendly, that should help you gain more friends and be a good friend to others even if you guys are not friends yet, a good insight and a positive outlook can go a long way
What should I do?