Nani admits Manchester United were flat for their defeat to West Bromwich Albion.
Nani knows that United need to improve all over the pitch if they are to mount a serious title defence.
"First half we controlled the game, but just couldn't score," said Nani.
"After our goal, I thought we were going to play better and get the second goal, but they just took their chances.
"We have a strong team here at United, some good players, so I am in no doubt we will put it right.
"We will just go out and try and win the next one.
"We should be playing better, but sometimes this happens."
