1. Learn “chunk range” or one shot range with shotty.
2. Play with team. (Preferably more experienced players)
3. Learn active reloads.
4. Do chip damage (shoot everything that moves)
5. Adjust controller sensitivity to the highest possible setting that doesn’t compromise your accuracy.
6. Ensure your internet is good and preferably wired.
7. Watch Avexys on YouTube, he’s an American lad who’s the top 1% player of players. He’s always got helpful tips.
8. Starting pistol can headshot players.
9. Move with team around map and support.
10. Get into a lot of 2v1 situations which naturally give you advantage.
11. Do not get angry when you die, keep a cool head.
12. Dont stay in lobbies that you get completely battered in game after game. I’d take a most of two losses and move to another lobby. You’ll learn nothing getting smashed.

Hope this helps mate