The Kings lost their third game in a row with a 98-95 defeat to the Oklahoma City Thunder as Cousins made just five out of his 20 attempts at the net, scoring 13 points in the contest.
"I've been playing like shit, man," Cousins told reporters. "That is our problem. It is me. I've been playing like absolute shit.
"I don't want to make any excuses. I've been playing like shit. No other excuse."
The Kings are 7-15 in their season.