Swansea manager Kenny Jackett blamed his side's lack of cutting edge for their defeat on penalties to Barnsley in the League One play-off final.
Jackett has vowed Swansea will bounce back
"It's a bitter disappointment, particularly considering we had more chances and more of the play," he said.
"I'm a little bit disappointed with the free-kick from which they scored. It looked like we offered the lad half the goal to sidefoot it into.
"But we had more than enough chances to win the game."
He added: "The game was almost indicative of our season.
"But what we will do is come back even stronger. We'll make sure the disappointment we feel now will drive us on to be a more successful club next season."