We were not brave enough, admits Palace boss De Boer
Frank de Boer blamed Crystal Palace's lack of courage for his third straight defeat as Eagles manager.
De Boer's unhappy start to life at Selhurst Park continued as Tammy Abraham and Jordan Ayew scored either side of half-time to hand Swansea a 2-0 win - their first of the season.
Palace have yet to score in De Boer's three Premier League games and only West Ham are below them in the table.
"In the first half we did not show any courage on the ball," De Boer said.
"There were lots of moments we could play on the ground, but we did not feel comfortable on the ball.
"I can not say it was because Swansea did a fantastic job.
"It was two teams who did not play their best and it is the team who makes less mistakes who win this kind of game.
"We could have done better with both goals, but I only saw the courage after it went to 2-0.
"That is the Crystal Palace I want to see, we created chances then and Swansea did not."
On-loan Chelsea youngster Abraham put Swansea ahead with his first Premier League goal a minute before the break.
Ayew then struck three minutes after the re-start and Palace fans vented their frustration both at half-time and full-time.
"I understand the fans are frustrated because they want to see points and goals and they are not spoiled right now," De Boer said.
"I am also frustrated. I can not say we are in a very good situation right now.
"So the best thing we have now is two weeks to train and get everybody fresh in the head again for the Burnley game.
"I'm very happy now the international break is there, hopefully we can turn it around in those two weeks and get on the board."
Swansea boss Paul Clement was delighted with his side's first league victory.
Clement's side had fought out a goalless draw at Southampton before losing 4-0 at home to Manchester United last weekend.
"I'm particularly happy with the result, although it is at a very early stage of the season it was an important game," Clement said.
"We've had a difficult start with two of our three Premier League games away from home and we were away to MK Dons in the cup.
"So to have four points from our first three games and go through in the EFL Cup, we can view that as a reasonable start."
Swansea have now scored six goals in two games after drawing blanks in their opening two matches.
"A lot of questions were already being asked that we're not creating goals or scoring goals," Clement said.
"But the strikers scored in midweek and again here.
"Jordan and Tammy have backed up their midweek goals in the Premier League and Leroy Fer also scored two at MK Dons, so that's good for us."