I have to agree with "rmqz".
Closet cheating took over the higher ranks month ago. Most parts of the community are completely oblivious to it. The cheating isnt too obvious and the communitys brainwashed into thinking that there are no ways to bypass vanguard.
There are many ways: DMA- or EFI-cheats, a few weeks ago you could even create simple cheats with the official software for e.g. your mouse. Friends of mine, who are experienced in cheating, had a little contest during the Valorant beta who could create the best cheat without being caught, none of them is caught yet...
Its really simple to spot a cheater if you know how most cheats work. For example someone whos been using a triggerbot for a while wont aim at the enemy, theyll whiff their crosshair over the opponent without correcting its position. You can spot many wallhackers by checking what position they play. Many will be on the correct site initially every single defender round. Little things like that reveal cheating.
Right now i personally have the impression that theres a cheaterQ with inofficially flagged accounts. On my main account ive been matched with or against cheater the last 40 games - every single one. On other accounts with about as many games, same elo etc. theres no problem. Might just be bad luck though.