pay a hacker, obviously.

git gud

Just use the tried and true boring meta Bunghole never addresses and only works around.

Just buy some cheats, put unlimited ammo option and blast enemy team with a heavy on a 1st round.
You not only gonna get your flawless but also never gonna get banned because developers of this game are clueless morons that never even bothered puting anti-cheat in a game.
If you gonna get called out on forums dont worry, moderators will remove their messages because its a harassment

If the team you're going against has Mountaintop or Revoker, you might want to quit the game and accept defeat. Unless your team has Mountaintop or Revoker.

Pray your enemy is bad and be knowledgeable on your map

idk man Im nearly legend in comp and I havent gone flawless since Trials of the Nine

Git Gud

Thats not a joke btw.

Cheat like everyone else.