Content Warning
This is a fun list of bad books to begin with if you're getting into science fiction literature.
Some great books here, actually, but yes, hard ones. I've started 5 of these, and finished, um... 3. ( I do have plans to finish reading the other two, but I have a large to-be-read pile).
https://screenrant.com/sci-fi-books-series-bad-for-beginners-list/