Wolves boss Nuno lamented his side's poor defending in Sunday's 3-2 loss to Everton.
Richarlison's late header was enough to seal victory for the Toffees at Goodison Park.
And Nuno was disappointed with how his team defended in the contest.
He said: "We must defend better, usually we do, so this is what we want to improve. We made mistakes that usually we don't, but it's part of the process, keep on going and work. I wish I had the answer, lack of communication, it happens, I've been there.
"This is football, sometimes you do things very well and don't achieve, sometimes not so good and you achieve, what we want is to learn from the competition and grow inside the competition. The most difficult is sustaining the performance game after game, but we want to achieve it."