The Barcelona forward admitted he and his teammates need to ready themselves for an avalanche of criticism after they were knocked out of the Uefa Champions League on Tuesday evening.
Despite being without Mohamed Salah, Robeto Firmino and Naby Keita, Liverpool put up a display for the ages as they recored their place in a second successive final following a 4-0 (4-3 on aggregate) win over the Spanish giants at Anfield.
Divock Origi scored the decisive goal following a quick corner-kick from Trent Alexander-Arnold that caught Barcelona napping.
"For their fourth goal we looked like schoolboys, we have to be ready for all the criticism that is going to rain down on us now," Suarez told reports following the match.
"We are very sad, we are in a lot of pain, we feel this pain even though we are professionals.
He added: "We have to do a lot of self criticism because this is the second time that the same thing has happened to us. We cannot commit the same mistake two years in a row, there are many things we need to consider and think about.
"They (Liverpool) did what they wanted to do, which was to score early. They believed from the first minute to the last," the Uruguayan concluded.
Barcelona were knocked out of the competition last season in similar circumstances, losing 3-0 at AS Roma following a 4-1 win at Camp Nou.