Slide, jump, and map lanes
Combat Master plays faster than a tac shooter. Learn two lanes per map. A slide into a pre-aim is a death. Shoulder the corner, then move.
Keep this resource nearby when a new map drops.
Gunsmith that you can actually control
Recoil and ADS speed beat a long barrel you cannot track. Pick a close gun and a mid gun. Do not stack six ads-slow attachments.
additional game information is extra gunsmith reading. related resources helps streak timing if you still pop UAVs in a lost spawn trap.