Cape Town - Liverpool manager Jurgen Klopp admits his players have many lessons to learn in the wake of their 5-0 hammering at the hands of Manchester City on Saturday.
The Reds were handed a devastating blow in the 37th minute of the Premier League encounter when Sadio Mane was shown a straight red card for a dangerous challenge on Ederson, who suffered a facial injury as a result.
Klopp's charges looked good before the sending off but crumbled after being reduced to 10-men as Pep Guardiola's side ran riot at the Etihad Stadium.
"We have a lot of things to learn from this game," Klopp told the club's official website.
"I was really angry at half-time. Not angry because of the result but because the boys saw we could have (won) at 100 percent. It's not important anymore, we lost 5-0, it sounds crazy I know! The first half, we didn't play like we wanted to, we were 60-70 percent.
"Sometimes it's impossible after the international break - different plans, different positions, they played all over the world, I don't like this but we cannot change it - but you saw City struggled also a little bit.
"We had then these clear moments and then it's one goal (conceded), forget it, it can happen, but the red card gave them (the advantage).
"Everybody knows it's a bad place to be one man down and we could see this so we tried to drop a little bit deeper, but it makes completely no sense. We have a lot of things to learn from today, but the problem is today we cannot change it, we can only learn from it and make the next time better."