The Reds boss found it "tricky" to talk about the side's 1-0 loss at Anfield on Sunday (14.04.24) and admitted his side simply hadn't been "good enough" on the pitch.
He told Sky Sports: "I feel really rubbish. I am standing here and to talk about this game is really tricky.
"The first half was absolutely not good enough. We lost conviction from the last game [against Atalanta]. We concede the goal, which is a horrible goal. A completely free player in the six-yard box, that cannot happen."
Klopp felt his team were not "together" enough.
He said: "We were just not together. If you press with 80 per cent, you better don't. It makes no sense. Curtis was really going for it but the first line were too far apart. Macca and Wataru, maybe normal, did not follow. The last line was deep as well.
"It is not about pointing the finger at that or that or that. The solution is being really together on the pitch. Where we are, we got to by being an absolute machine against the ball and that is what we have to be."
But the manager admitted the players are tired from a hectic playing schedule.
Asked if fatigue had been a factor, he pointed out midfielders Wataru Endo and Alexis MacAllister and said: "Did Wataru and Macca play too much in the last few weeks? Maybe. Other guys are coming back from injury. That is a bit of the situation."
And Klopp won't give up hope of securing a final leave title before he leaves the club at the end of the season.
Asked where that leaves the Premier League title race, Klopp said: "The answer is pretty easy.
"If we play like that in the first half, why should we win the league? If we play like we did in the second half, we can win football games. If we can win football games, then we will see how many we can win.
"We have to be around now when the other guys struggle, if they struggle. That is how it is. We have to win football games anyway. Now, a string of four away games. That would have been tough anyway. That is clear. We have to deal with that now. There is nothing else.
"The criticism in these moments is absolutely fine and right. We have to deal with it."
