Mobile/pc? ... Play the ones that are not lite ... Get Higher power pc higher refresh rate screen will help you to get 100 upto 144FPS which will make you faster at shooting, spotting people or whatever. Use a gaming mouse not a touchpad. Tilt your keyboard 30-45 degrees if it helps. And none of the above matters if you don't practice... a lot of practice is what makes a pro player... People like shroud play 10 hours a day so there is that. And one last thing focus on pubg only playing something like cod will disterb your musle memory b/c the games have different gun mechanics and movement.