I have a slow reaction and poor understanding. I am always so wrong when others speak, so people around me always laugh at me and even satirize me. How can I change myself?

The less confident you are, the more nervous you will be, and then you will lose your original judgment. No one is born stupid except a madman. It takes time to be alert. You should read more books, no matter what books are good. For example, you usually read newspapers and news, and the accumulated information can make corresponding analysis and judgment when you face some things. Only when people are enriched can they have confidence and aura. You will appear calm when dealing with things.