Martin Kelly admitted he had mixed emotions after his first start in a red shirt ended in defeat at the hands of Lyon in the Champions League.
The former Academy starlet was given an unexpected chance at right back because of injury to Glen Johnson and he enjoyed an encouraging full debut.
"I was happy to make my debut and the fans were fantastic with me but it was just disappointing with the final result," the Reds No.34 told Liverpoolfc.tv.
"The lads were frustrated in the dressing room and it was tough to take losing right at the end.
"It was a cruel way to lose the game because I didn't think they looked like scoring in the second half to be honest.
"I thought we deserved to win and it was a frustrating night for us.
"Everyone is disappointed but we've got a game on Sunday against Manchester United and we need to put it right."
Kelly nearly scored on his debut when he missed the chance before Yossi Benayoun was on hand to expertly finish at the Kop end.
"I was happy to see Yossi score because I would have probably got slated at half-time for missing the chance," he said.
The Liverpoolfc.tv Man of the Match only found out he was playing an hour before kick-off and added: "I will take a lot of confidence from starting my first game for Liverpool but in football you are only as good as your last game.
"I've just got to keep working hard and put performances in week in, week out, and not just for one game."
The defender's night ended with him being forced to leave the field after colliding with the post on attempting to try and keep out Maxime Gonalon's effort.
"The doctor has had a look at it but hopefully it is not too bad," he added.