Buy hacks and use them to find ways to check players
Suggestion: Can the devs perhaps start buying whatever hacks they are able to find on the market, run it in a closed network and find out exactly how it differs in a detectable way from standard data, and use this to rapidly detect cheaters? Anyone flagged as using a cheat through this method can get sent to someone to spectate them and verify they are cheating, and ban them before they even get 2 games in.
It needs to get to a point where people either cannot create new accounts (use mobile verification perhaps? or start IP banning people?) or they spend so much time creating new accounts rather than playing that they just stop. I wanted to get my battle pass to 110, but if I am getting killed by aimbotters EVERY SINGLE GAME (not just a few, not even most, literally every single game I have played in the last few weeks, spectated and verified to be cheating) then its more pain than its worth.
Edit: alternatively, hire a crew of dedicated fulltime staff to spectate players who get reported and ban them, keep several people active 24/7 (split into 8 hr shifts, obviously) and start banning people before they even finish their trashy games.