Man United put in a dismal display at Old Trafford and were beaten thanks to goals from Cameron Jerome and Alexander Tettey.
Mata continued his poor form against the Canaries and was largely anonymous. The Spaniard insisted his side “have to do better” if they are to turn their fortunes around.
“Of course we’re disappointed. It’s another very difficult day for us, but the only thing we can do now is stick together and hope that we get the win in the next game because we need it. We need to win as soon as possible,” Mata said.
“It’s very frustrating not to win, especially at home. We should win at Old Trafford if we want to be successful, but we haven’t done it. We feel deeply sorry for the fans, I think they’re incredible, so we have to do better for them.
“Everyone’s frustrated; the fans, the staff and especially us. As I said before, we need to stick together. It’s time for us to show that we’re strong, we have to fight in every game and get back to getting good results as soon as possible. It’s Christmas time, a crucial time, so we have to do it.
“We tried [to come back]. You always have to believe until the end that you can score, firstly to equalise and then win the game. Anthony Martial scored a good goal and after that we created chances, but it was too late in the game I think. We couldn’t do it, and I’m very disappointed.”
Saturday felt like the final nail in the coffin for Louis van Gaal as many fans are now firmly against the Dutchman continuing as United manager.
Results haven’t been good enough, the players look disinterested and the club looks rotten from top to bottom. While van Gaal is culpable for a large part of that, the likes of Mata must be asking themselves why their form has dipped so much.