Jurgen Klopp said Liverpool's young players have much to learn after his weakened side slumped to a lackluster 3-1 loss to Swansea on Sunday.

Two goals by Andre Ayew and one from Jack Cork at Liberty Stadium proved enough for Swansea to guarantee its Premier League safety.

Christian Benteke pulled one back for Liverpool, but Klopp's team was outclassed in a game sandwiched between the more significant business of its Europa League semifinal against Villarreal.

Liverpool will now turn its attention to overturning a 1-0 deficit in Thursday's semifinal second leg against the Spanish side at Anfield - and Klopp was quick to concede the youngsters he brought into the lineup were in need of polish.

"The performance was different to Bournemouth. We did not play as well as we could and our performance was not as good as it could have been," the manager said.

"We tried to bring in fresh legs, as we have done in the last few weeks. However, I am only frustrated because we could have played better.

"Had we have played a bit nearer to 100 percent, it would have been completely different.

"The first two goals were too easy. They deserved the win and we deserved the defeat. But our performance was responsible for that and we have to recover and prepare for a big game in Thursday.

"I cannot change my mind on players after every two days. Everyone said how good they were after Bournemouth, but it is not always a honeymoon period and you have to prove yourself and deliver."

Klopp also defended Daniel Sturridge's decision to head to the dressing room at the final whistle, rather than joining his teammates in thanking the traveling Liverpool fans.

"He was not ignoring the fans; I went in immediately also. I hope our fans know how close we are to them," Klopp said.

"You want to go home, rest and recover after a game like that. My fault if someone does not say thank you."

The suggestion was that England forward Sturridge was disappointed not to have been withdrawn sometime during the second half.

Having played the full 90 minutes, he is now unlikely to start on Thursday after he was an unused substitute in Spain in midweek.

"I spoke to him at halftime; he said he wanted to play and it was no problem," Klopp said.

"We have a few days. I am happy. I do not know who will play against Villarreal. The Europa League is now our focus, but the Premier League will be our focus next weekend. Life is like this; we have played well with different line-ups, today we did not.

"We hope there are five games left this season and that is a good sign as we are still in the competition."

Swansea's victory ensured a successful rescue mission for manager Francesco Guidolin, who took over with the club in danger of relegation.

"I am happy for my players, this is the most important thing because they showed they are not on the beach," Guidolin said.

"I am happy we are safe. I felt we were safe three weeks ago, but not mathematically.

"To have 40 points with five games to go was important; now we have 43, so this is not the worst season Swansea have had in the Premier League.

"I have done my job very well and I thank the players, assistants and staff.

"I am proud because this is my first time in the Premier League."