Manchester United boss Louis van Gaal was proud of his players despite crashing out of the League Cup at the hands of Middlesbrough.
Wayne Rooney, Michael Carrick and Ashley Young all missed from the spot as Boro moved on after the penalty shoot-out.
And van Gaal says it's time to start converting chances into goals.
"We are very disappointed," van Gaal said.
"We could have finished so many of our chances so easily, and we didn't do it, so it's very disappointing.
"We have to solve this problem. Against Manchester City, we had more chances than City and we have to finish one of those chances.
"We didn't create so much against City as we did today but we have to finish. A lot of players were in finishing circumstances and didn't do it. Not one player but more players so that's a little bit frustrating. But it's like that and we have to continue.
"Last year, we were out of this cup already, in the first match, 4-0 [lost to Milton Keynes Dons]. Now we are in the final 16 and we had to win.
"But, okay, we were not lucky. I have to say you have to force the luck. Against Manchester City, we were also not lucky but I cannot repeat that every week that we're not lucky. You have to force the luck.
"Of course, there were some players that have played a very good game. I have to admit that I'm very proud of that because it's not an easy game against Middlesbrough.
"So I'm pleased with some of the performances of my players but I am also disappointed with some of my players. That's the life of the manager."