My ability to recognize faces is very weak. I can’t recognize them even if I change my hairstyle or something. What’s wrong with this?

It’s prosopagnosia. I also have it, but it’s relatively mild. It’s just difficult to recognize it. By the time I recognize it, I’ve already passed it by.

You'd better deepen your impression through observation and communication when you first get to know each other, and tell the other person with a frank smile, "I'm glad to meet you, but I have prosopagnosia. If I meet you in the future, I will "Tell me haha", usually the other person won't mind if you explain it clearly, and they will think you are sincere.