The second leg at Anfield ended in a 3-3 draw, with Liverpool advancing 6-4 on aggregate.
Despite conceding three goals at home, Klopp was not going to focus on the negatives after making seven changes to his side.
"The day when we qualify for the Champions League semi-finals and I am not happy, please come here and knock me out, because that makes no sense!" Klopp told BT Sport.
"We made seven changes for good reasons, played a really good first half, scored goals, I really liked a lot of things, we were 3-1 up, and this last line never played together, and it is little details. It's really difficult.
"We did not have 100 percent mindset but it is not important, because if we played the best game of the season tonight, it wouldn't make it more likely for us to get to the final. We got through and I am really happy."
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