Suggest Me a Book to Read Between the Lines

Please no spoilers for books you recommend, I’d love to figure out the underlying meanings myself.
Looking for a fiction book, open to different genres. But I would love to read a book with some underlying meaning, unreliable narrator, or a twist so big it completely changes the story. A book that when you finish it, you can barely sleep because you are still thinking about what in the world you just read.

I’ve already read The Secret History and The Silent Patient. (No Colleen Hoover please)

Thanks!!