The Reds entered the contest looking to bounce back from their 3-0 home defeat to Atalanta BC in the first leg of their Europa League quarter-final on Thursday night.
However, an early goal from Eberechi Eze decided the contest at Anfield, with Palace recording a famous victory and denting Liverpool's Premier League title hopes in the process.
The Merseyside outfit have now picked up just one point from their last two league matches, and they are third in the table, two points behind the leaders Manchester City.
Klopp admitted that «it wasn't a fully convinced team on the pitch», but he still believes that his side had enough opportunities to comfortably triumph against the capital outfit.
Liverpool are looking tired heading into the final straight«The stats in the first half won't be as great as the stats in the second half. I think that was pretty obvious we didn't play a good first half. We wanted a reaction and we saw a reaction,» he told BBC Sport.
«It wasn't a fully convinced team on the pitch. It's a really difficult one. We weren't great. Crystal Palace had far too many football moments where we ran in the wrong direction.
»In more than 20 years when you watch my teams, the press and counter press is pretty good, some days it is outstanding. In the first half, it was nothing and then we were 1-0 down.
«Second half, we tried to change the formation and dynamic that wasn't tricky for Crystal Palace. You could stand here on another day and see the same balls go in and we're talking about a 4-1 win, but football doesn't work like that.
»I would say with the
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