I'm not that big on FPS games. When I play Nintendo I generally play things like Mario Party or Mario Kart. A friend recently gave me an Xbox Series S, and off the top of my head I couldn't think of a single multi-player party sorta party game. I'm sure there are plenty of these games, but they definitely don't have the same type of draw as Mario.
The major non-Nintendo consoles have de-emphasized splitscreen and party games for a long time -- once we hit the PS4 and Xbox One era, it felt like most games didn't even support splitscreen at all, aside from a few indies. I think those games tend to rely on in-person interaction to boost the fun, and MS/Sony have decided to prioritize selling additional consoles instead of making one usable for multiple people.
The halo universe is pretty big. There are about 20-30+ books that I can recall, a phone game, and 2 RTS games on top of the FPS games we know and love. There is a TV show releasing this or next year. The universe of Halo is one I've grown up with and can't stop waiting for the next piece of lore to come out. There's a lot to enjoy in the Halo universe even if you don't play FPSes. The books themselves are solid though a solid % is just your run-of-the-mill fiction.