presale questions cs go

im intrested to buy cs go cheat. so , today i played against a cheater on cs go mm , i was cheating aswell , but when the game was to the end , he swiched to rage mode , i didnt cuz im playing legit , so i wont get banned  , so he won , and in the end he said aimware is overwatch proof , is that right? or he was just trolling ?

as i ve seen on supported anti cheat at cs go cheat , "match macking anti-cheat" what does that mean? :D thx for ur answers.