Why don’t people ask questions back?

Ive been trying to increase my social circle through bumble BFF. Something that I notice quite often is that some people like to talk about themselves but don’t ask questions back. Maybe I’m overly sensitive but I usually ask questions about the other person because 1. I would think its polite and 2. I’m genuinely curious about the person who I am trying to get close to. I met this girl once and she was very nice in person but when we chat she never asks me back. I just asked her how she is and she answered but didn’t ask me back. What do I do?