Speaking of experience, my personal feeling is that when I was a student, I mainly made friends, without much utilitarian heart and pure friendship.
Regarding the bottom line for friends to get along with, I personally think that it certainly does not violate the law and morality.
There are many ways to make friends, online and in real life.
As for the classification of friends, there are only a few kinds. One is the iron buddy. Once you encounter difficulties, he is the first person you think of. One is ordinary friends, although they don't have much contact, but they can also talk about each other's recent situation when they are in contact. The other is fair-weather friends, that is, the kind who can drink and chat together, play mahjong and sing. Sometimes such friends can become close friends.
You should learn to distinguish the advice you give to your friends with your heart. What you give is purely utilitarian, and at the same time, you should have some reservations about people.