Manchester United lost their 10th Premier League match of the season on Sunday when they fell 3-1 to visiting Brighton & Hove Albion.
The Red Devils found themselves in a hole early as Brighton scored in the fifth minute, but Bruno Fernandes equalised with a 23rd-minute penalty.
However, that was as good as it would get for United on Sunday as they gave up two second-half goals to allow their visitors to walk away with all three points.
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For club captain Fernandes, United's issue is one of intensity as they allowed Brighton to force turnovers several times in the match.
"We can't concede goals so easily," Fernandes told BBC Match of the Day. "We need to be more aggressive on the ball because this is the Premier League and the quality is so high.
"You have to be high intensity all the time. We need to be braver on the ball in the final third and between the lines. I need to keep the ball more between the lines and then play from there.
"We can't end up all the time with the ball at our goalkeeper like we do all the time. I believe that it's confidence and bravery to do the right things.
"Don't have fear of doing mistakes, that's part of football. We have to be brave to do it again and again. It doesn't matter how much pressure is on you or how difficult it is to play for Manchester United."