Yoan Gouffran blamed a lack of fighting spirit and intensity for Newcastle United’s “unacceptable” FA Cup defeat.
The Magpies have lost four of their last five FA Cup ties after surrendering a 1-0 advantage to go out of the third round 2-1 at home to Cardiff City.
Forward Gouffran apologised to the club’s supporters – around 30,000 of whom were at the game – and revealed he, like manager Alan Pardew, was “angry” at the manner of the defeat.
He said: “We played very badly. We had no fighting spirit and we deserved to lose the game.
“This hurts more than losing in the league because we wanted to win something this year, but we have lost in both cups.
“We felt we could go far in this competition.
“We wanted to win for the fans, we know what it means to them, but we played so bad and we are disappointed we couldn’t give them something to cheer about.”
Newcastle reached the fourth round of this season’s League Cup before being knocked out in extra-time by Manchester City.
They have not won a domestic trophy since the 1955 FA Cup.
Hatem Ben Arfa struck the woodwork twice before Papiss Cisse put United ahead after 61 minutes.
Yet once in front, they eased up and were punished by goals from substitutes Craig Noone and Fraizer Campbell.
“We scored one goal and we thought we were going to win then, but we gave away two goals and we are very disappointed,” Gouffran reflected.
“I am very angry, the manager was very angry with us.
“We can’t play like that at home. It was unacceptable and we have to try and change the mentality.
“We thought we were going to win so maybe we lost a little bit of intensity and concentration.
“We should have tried to get a second goal but we didn’t and we gave away two bad goals.
“It’s been a bad start to the year (it was Newcastle’s third consecutive defeat) but we will train and work as hard as we can. We have fewer matches so we can go out there with a good team spirit and get back to winning ways.”