Have you watched the series The Silo? It is on Apple TV. I love the show. Based on a serious of books. Season 3 should be coming out some time next year so a good time to watch the first 2 seasons if you have not. Your comment basically made me think of that show. They are a multi generational society that lives in a massive underground silo. And many of your concepts you mentioned play out. But in that show the brutal and very strict rules of course were used to keep people in order and from not rebelling. Of course as brutal as they are and do their best to control and stop rebellions it will always be inevitable. I don't want to give any spoilers away but I highly enjoyed the show and definitely recommend it. Cheers.