Someone, Anyone, Explain What the Fuck Happened to Michael Carter Williams

I remember thinking he was going to be the GOAT after starting with 22/12/7 with 9 steals against the reigning champs in their hometown then getting 27/12/10 in December of that year. Why is he not good? Why has he not stuck with one team? I need to know please help

fun fact: MCW is tied for 3rd most single-game steals all-time whoop