I have trouble remembering faces.
I remember people not by their face but by their gait, voice, hairstyle, and glasses. So if someone gets a haircut, it resets everything lol. For a long time I thought I was just a rude and indifferent person, but when I found out there are people who are just bad at facial recognition, I felt so relieved. Now I tell people in advance. "I'm bad at remembering faces, so don't take it the wrong way if I don't greet you first." That one line made social life way easier.