A despondent Adam Rooney admitted the Aberdeen players were subpar in their 3-0 Betfred Cup final defeat to Celtic.
Tom Rogic, James Forrest and Moussa Dembele all scored to help Celtic win their 100th major trophy.
But disappointment was the word of the day for the Dons, who failed to play up to their potential.
Derek McInnes’ side came into the game on the back of two successive victories at Partick and Inverness.
But Celtic were ruthless with their opportunities and showed a clinical edge Aberdeen lacked.
Irishman Rooney was starved of service as the team lacked their usual incision in attack.
And the forward was frank about how the side’s subpar display ultimately killed their chances of a second League Cup title in three years.
He said: “We came here confident and looking to win the game and pick up a winner’s medal but today we didn’t perform like we could have done, it’s just disappointing.”
He added: “Today they took their chances, unfortunately we didn’t do that and I thought we should have been more clinical at the other end ourselves.
“Obviously they were two goals up but second half, we started off well and had them on the back foot and then they got the penalty and that’s the end of the game really.”
The result means Celtic have now beaten the Dons three times this season in all competitions.
Brendan Rodgers’ side have scored eight goals in those fixtures and the Hoops look a different proposition than they were under Ronny Deila.
But Rooney dismissed the idea Aberdeen have any sort of mental block when it comes to facing Celtic.
“I wouldn’t say that, we’ve run them close in the past, we’ve beaten them different kinds of ways but today it wasn’t to be.”
Rooney knows the fans will be hurting and acknowledged after today’s result the players will have to “take it on the chin”.
The Irishman praised the travelling support the team received, who prepared a magnificent mosaic display in the stands.
Chances were limited for Rooney as Aberdeen struggled going forward.
Aberdeen will have little time to dwell on the result with eight games on the slate for December.
With another trip to Glasgow next week for a clash with Rangers, Rooney wants to put today’s result behind him and move on.
“Obviously we’re disappointed and I’m sure all the fans are as well,” he said.
“It’s disappointing we didn’t get a couple of goals and make it a closer game today.
“It was a great display (from the supporters), it lifted all the lads but there’s not much we can do now.
“We just have to improve on this and have a good season from here on in.”