You’re not looking close enough.
I don’t know your preferences, but check out ‘Longmire’…’Intelligence’……’Black Ground Rising’…’Shetland’…the menus are not very helpful in finding content, but once you figure out how to find it, there’s more there than you can watch in a lifetime.
Try the search function using an actors name instead of ‘genres’, their whole filmography will come up. I found that helps a lot. We have Apple TV as well, but almost never use it because of all the stuff on Netflix.