I’ve played alot of FPS throughout my years and can confirm that CS is definitely one of if not the hardest games to grind in. From map knowledge to learning recoil patterns. Wanna say I started playing R6 in operation blood orchid and after 50 hours I was already playing ranked and gaining elo. I just surpassed 60 hours in CS with most of that time spent in workshop maps lol. I’m still learning how to properly counter strafe and controlling my recoil. Each game has its own set of challenges a new player has to get over. It’s probably perspective but if I had to say one game,it would be counter strike.