books about a group of people trying to survive?

ugh i don't really know how to describe it. My best example is ,,Battle Royale'' by Koushun Takami – this book is absolutely brilliant and I'm looking for something similar (and yes, I have read the Hunger Games haha, it's great as well). But it doesn't have to be a 'deadly game' theme. For instance, I loved ,,When we were lost'' by Kevin Wignall (one of my favs) and, when it comes to a slightly different genre, I really enjoyed the Wayward Pines trilogy by Blake Crouch. I ofc have read ,,Lord of the Flies'' as well. So. If you know any books like this, I'd be really grateful for your recs!