There are lots, and lots, and lots of books. With those that have been filtered by time and decades to centuries of fans and specialists, if you can’t get something out of them
usually that’s your fault—which is fine and normal, since for most people getting acquainted enough with literature from a different place or era to enjoy it takes some deliberate effort, just like learning to appreciate new genres of music, or film of a style you didn’t grow up with, or a genre of video game that’s not immediately rewarding. And that’s just fiction!
Maybe try poetry? Though, same applies. Anything that’s not popular, recent fiction aimed at a grade 8 reading level is going to take some effort and practice to learn to appreciate and fully understand. Literacy is a very wide spectrum.
[edit] incidentally, for whatever reason, I find drawing book recommendations from strangers online nearly useless. This goes double for genre fic and non-fic. For other media it works fine. Dunno why but I think part of it may be that people read more differently, and for more reasons, than they watch movies or listen to music play games. I also find it’s easier in other media to quickly spot people with tastes that are very contrary to mine, and so ignore them.
One thing that seems to help is that more people are able to say “this is trash, but it’s my kind of trash, but hey, here’s this other thing like it that’s actually good” with film than with books. Something about books seems to make people use a much broader and less-differentiated or less-well-tuned definition of “good” and then just apply that same label to everything they read and don’t hate.