Christian Eriksen admitted Tottenham were not good enough to deserve anything other than Europa League elimination after a 2-2 draw against Gent resulted in a 3-2 aggregate loss.
Eriksen opened the scoring for Tottenham in the first half, but it all went wrong before the break as Harry Kane scored an own goal and Dele Alli was shown a red card for a horrible lunge on Brecht Dejaegere six minutes before half time.
Victor Wanyama's superb second-half strike gave Tottenham temporary hope but Jeremy Perbet killed it late on as he capitalised on a defensive mix-up to score.
"We are very, very disappointed with what we achieved today, and in these two games against Gent," Eriksen said on BT Sport.
"In the first half they didn't have a shot on target but they still got a goal and this gave them confidence. Also the first game that we lost, it makes it much more difficult. We gave it away on a stupid mistake but they took their chance very well. We were not good enough."
Spurs could complain that the corner from which Kane put into his own net should have been a goal kick, but Eriksen said they had to blame themselves.
"Overall we did what we could and the ref was not on our side," he said. "I haven't seen if it was a red card but we showed good character with 10 men. We had our chances, but when they scored to make it 2-2 it was a big punch.
"We can't blame the ref but he could have made it easier if it shouldn't have been a corner. We could blame the ref but we had our chances and at the end of the day we were not good enough."