Loris Karius admitted his mistakes had cost Liverpool any chance of winning the Champions League final.
The 24-year-old was in tears at the final whistle in Kiev after the Reds' 3-1 defeat to Real Madrid. The Spanish side's first goal came when Karim Benzema charged down an attempted throw-out by Karius, and the goalkeeper then allowed a long-range Gareth Bale shot to slip through his grasp for the third.
"I lost my team the game," he told talkSPORT.
"I'm sorry for everyone - from the team, from the whole club - that the mistakes cost dearly.
"If I could go back in time, I would. I feel sorry for my team. I know I let them down.
"It's very hard right now but that's the life of a goalkeeper. These goals cost us the title, basically."
Former Reds goalkeeper Ray Clemence said Karius would have to live with his mistakes "for the rest of his life".
Clemence, who was in goal for Liverpool's first three European Cup wins including the 1-0 victory over Real in 1981, told BBC Radio Five Live's Sportsweek programme: "He's made two horrendous errors at vital times in the game and he has to live with that.
"He's got the whole summer to think about it and when you make mistakes in massive games like that they will be with you for the rest of your life, because people will remember them and keep reminding you of them."