The Reds will play the second round with the German club at Anfield on February 25 and if they are to get through to the Round of 16, Klopp feels they have to show more quality in their all-round play.
He said: "Doing the right thing at the right moment is important - we had a few good moments and in the second half we had three or four really good moves.
"My problem is that I think, with our quality, we should do better, but I have to be patient.
"It's not too easy to find the right words. I could say it's a draw, 0-0 away game, everything is 'Okay, we can win at home, everything's cool', but in our situation I'm always interested in the performance."