Leeds were beaten 1-0 at home by QPR, and McDermott was not happy with their attacking play.
"It was a tough game, we knew that," McDermott told Sky Sports News.
"We knew what we were coming up against. They worked hard, it was a good away performance. We thought we deserved a point; did we do enough to win it? Probably not.
"They didn't really have too many chances but they scored from a set play, which was poor to say the least. You have to take the games to teams at Elland Road."
Leeds's next game is against Bolton Wanderers in two weeks' time.