Ye, my friend that reached Global stop trying to play in MM.
He grinded his way to Faceit Lvl 10.
He told me every three games there would be hackers that would be either spinning or just aim botting pretty blatantly. Or just shooting through smokes.
I didn't believe in him because I was still Mg1 and Nova Master, but once I reached his level in playing in those ranks, hackers became really common.