The wide man has also revealed to MUTV that Sir Alex Ferguson has spoken with the squad to outline his expectations for the remainder of the Barclays Premier League campaign following the FA Cup exit to Chelsea.
"I think everyone has been a bit disappointed and a bit down after that day [at Stamford Bridge]," he conceded. "Everyone expected a good result but that's football and we already spoke all together with the manager. We know we still have a job to do and have to focus on the next games and try to forget that.
"This season has been a bit disappointing for me as I've had a couple of injuries. It's been very difficult to be at my best but I've come back from injury and am trying to be at my best until the finish of the season. I hope that, next season, I can do what I like to do - play my football and be at my best."
The winning mentality at Old Trafford continues to spur Nani and his team-mates to glory as reclaiming the championship from Manchester City would go a long way to erasing the painful memories of last May.
"It means a lot because I've been saying in the past that what you learn at this club is the mentality to always win every competition and the most important is the Premier League," he stressed.
"So what happened last year made us very focused on this league for this year. I think we've been doing a very good job to be in this position and we want to win the league and make history for this club again.