Why do some people have a topic with everyone, and some people can't even talk?

I am the kind of person who can talk to anyone. I got together with a bunch of people. If I want to talk, I have many topics to amuse them. If two or three people are chatting, I can follow their topic and have a good chat with them. I think the secret is to hold your breath. Blowing is blowing other people's trivial things. For example, I always say that my roommate is the most handsome in the college. Secondly, talk to people more and learn as much as possible. All walks of life know something about popular science. I went to the supermarket with a sister that day, and I told her about toothpaste for a long time.