Luis Suarez blasted Barcelona teammates after Liverpool's Champions League shock on Tuesday night.
Defending a 3-0 lead, Barca lost 4-0 at Anfield as Liverpool reached a second consecutive final.
"I think we have to do a lot of self-criticism, we are adults, we have many years in this category," Suarez said.
"We must reproach ourselves for things that we have done wrong, like thinking that everything was liquidated.
"We should not blame the coach, we are the players who play.
"I do not know if it's a matter of attitude, but we're Barcelona, we cannot concede two goals in a row.
"The fourth is a goal by kids."