Humor with a bad brain. How to write?

First, I feel that my brain has been slow recently. Sometimes you don't react until you do something wrong. When I react, I'll wonder which idiot did such a stupid thing ... and then feel worried about my IQ. ...

2. Today, an eight-year-old child, as a teacher, taught me to play chess, feeling inferior to the strategies of primary school students, and suddenly worried about his IQ.

Third, in real life, the more humble my means are and my IQ is worrying, the more I support them with both hands.

Fourth, I forgot where my mobile phone was when I turned around, and I felt worried about my IQ. I almost went to the washing machine at work just now, because I don't doubt that I might have thrown it in with my clothes.

Verb (abbreviation for verb) I'm worried about my IQ ... I don't understand Dunkirk ... OK, admit I'm stupid.