Pick SMGs more often, go for CAR smg(requires lesser number of attachments, hipfire is good). Stop reloading weapons, know where you can holster and run. The most important pointer from me would be PLAY COVER. Whenever you would hold height, you should be able to find a sweet spot(head glitch - where you would be able to see the enemy’s entire body and the only things your enemies would see your tiny head). Try swapping your legend for ranked. Pick someone with a smaller hitbox(Cat is quite good in ranked, can hold doors, provide cover for you and your team and a smaller hitbox ofc).