Camping in PUBG mobile is a strategy where you stick to one spot and shoot the players who get into your sight. It makes the movement minimal and allows for a full scan of the area around. No death due to jumping and running around and minimal sound. More importantly, if done right, there is less chance of encountering enemies and dying. It can be a boring strategy but it really helps the player survive. Though he doesn’t kill too many and may get rusty from just sitting around and sniping easy targets. So there is no improvement in shooting skills and a decrease in the K/D ratio. But your ranks you will skyrocket.