i think maybe it would be hard to read (many kinds of) fiction if you're not especially interested in people. so maybe start by working out whether that's true of you?

i'm just basing this on my own introspection about why i read; and i guess specifically why i prefer fiction most of the time. it's a form of peoplewatching. even the most action-packed story has some element to it that covers some aspect of the character(s)' internal, personal life. that can be the most mundane, derivative kind of cliche, or it can be a kind of introspection, or originality, that marks the book out as 'great'. there is no widely respected literature that is NOT about the human condition - at least not as far as i know. plot alone is never profound.

of course you may not be reading for taht kind of benefit or for those kinds of motives. but whatever your choice of book, if you're not interested to follow what the people are doing you're likely to struggle with it.