It’s true that some people have a natural gift for creating intolerably bad fiction. A few have made a fortune at it.
Anyway, there are all sorts of books and articles to tell you how to write good fiction, but next to no advice on how to write truly awful fiction. So maybe this will help.
https://leeduigon.com/2015/02/22/how-to-write-a-really-rotten-novel/