The Red Devils were unable to take advantage of the extra man after Idrissa Gueye was sent off and failed to break down a team who has claimed just one away win all season against bottom of the league Wolves.
The Premier League is unforgiving
The tragic loss brought United's five game unbeaten run to an end, and now manager Ruben Amorim and his side sit 10th in the Premier League, far off the top four positions.
De Ligt admits that his side were not good enough, and suggested that any side that are underperforming will become crushed in the brutal English top flight.
"We conceded one goal AND we didn't create a lot of chances. I think overall it was just a really bad performance.
"It is frustrating, but that's football. I mean, the Premier League is not for the weak. “One chance could be a goal and, yeah, if they score after one chance, and we don't, then that makes the difference.
"That’s the difference between winning and losing, the efficiency. We lacked that. I think we lacked maybe the urgency to score the goals, to create the chances, and then you know, against a team like Everton, who drops back and who are really strong in the air, it's going to be quite difficult. That basically sums up the night."
United must bounce back
United will attempt to get back to winning ways in Sunday’s trip to Selhurst Park to face fifth-placed Crystal Palace. De Ligt says his team must regroup and grab a result away from home.
“The next game, obviously, is really important now. We have to bounce back from this performance. We had some good performances the last couple of weeks, and now we had a bad one. I think we can all say that.
“Now it’s for us the case to come back, to stay together and to make clear what has to be better because, obviously, today was not good enough.”