I’ll go with the low-hanging fruit: Mein Kampf. I’ve read it, cover to cover. As a piece of propaganda, it’s good. As an example of good writing? Absolutely not (though I will admit I have only read it in translation). Oh, and the whole fascist, racist, and generally shitty worldview of the author that he infuses into the text. And the fact that the author is literally Hitler. You 5-star that book? You’re a Nazi. Period. And as a Jewish person, I don’t look too kindly on them.
TL;DR: The inventor of VR created a megalithic company that pretty much owns the world which has since gone to shit. After the inventor passed away, he willed his shares of the company to someone who could solve his puzzles hidden in the VR world.
Protagonist is someone from r/niceguys whose only personality traits are that he’s fat and has an encyclopedic memory of any 80s trivia. He wins the competition, gets together with the gamer girl and turns off the VR for 2 days a week.
Whislt not an outright flag like Mein Kampf, it does show your taste in books if you think it’s a 5/5. It’s a poorly written book (the prose is horrible) that is a pure nostalgia wank-fest of the 80s with a self-insert protagonist who doesn’t grow during his journey.