Not a rec but rather a warning?
The Blackpill Theory or Why Incels are Right and you are Wrong by Dr. Castle is just a compilation of 4chan posts and graphs and not worth the 13$ to flip through a couple of pages of some dude coping really fucking hard through a paperback
Off topic, but if women found them attractive, then the incels would be princes, and most worthy.
That really depends on how much of their entitlement is independent of their circumstances.