The clash in the Bundesliga on Saturday ended in a 1-1 draw.
“For the first fifteen minutes, we played the way we planned beforehand. But after that, we tried to go through the middle far too often, and that wasn’t clever, because that’s where all the Köln players were,” said Van Gaal during the post-match press conference.
“We were better after half-time because we got the ball wide, but we failed to score the second goal. I believe you have to earn your luck, and for thirty minutes in the first half, that’s what we failed to do.”