I have two. The Ritual and Drowning.
The Ritual is pure smut. 61 chapters and every one contains a graphic, demeaning sex scene. I’m convinced the author was an adult film screenwriter and decided to try their hand at writing a novel. There isn’t a single likable character in this book.
Drowning isn’t a great work of literature. I felt that the characters were very two-dimensional. I hated how naive the author made the protagonist. It made me have a lack of sympathy for her. The ending was series finale of Dexter bad.
Go Set a Watchman. I really liked TKAM so when I heard there was a sequel I got really excited. After reading it I was so confused by how terrible it was that I looked into it and turns out it was a rough draft for TKAM that Harper Lee never intended to publish. Apparently Harper was losing a lot of her mental faculties as she aged and her sister had been protecting her from snobby publishers and whatnot but after she passed away, they were able to convince Harper to release it as a “sequel.” It’s seriously really bad