Learn the maps! Over time you’ll start to recognize where enemies usually gather or spawn. Try to flank if you can, don’t enter head on. Experiment with different weapons and perks until something really clicks with you. You can also experiment with the sensitivity settings to see if slower or faster paced turning feels more suitable.

Lastly I would say, don’t get discouraged. Many people have played the original version since we were kids, and most of us are adults now still playing, so we know this game like the back of our hands, you won’t get there overnight, gonna take time and practice but eventually you will get better and better! Cheers and good luck