Let me analyze it for you.

1. Have no self-confidence, dare not show yourself, dare not show yourself.

But she or he really wants to make a good impression on others, at least in a virtual way. But is it really impressive? I don't comment, I think it's only to a certain extent.

This shows that she is eager to make friends. Because netizens will misunderstand your true face, that is to say (for reference only, personal opinion) he is very gentle, open his heart to others anytime and anywhere, and getting him (her) is as easy as blowing off the dust. Maybe she is ignorant, maybe he is a teenager!

4. People who don't want to lose friends at the same time and value friendship.

5. Some people may be shy and ordinary.

From a psychological point of view, many reasons trigger! I can think of it, but people don't like to say it!