Manchester City lost the derby 2-0 to United last night.
The Cityzens are still 11 points ahead in the league with only 10 games left to play.
This means the title is all but done, something KDB was keen to point out.
He urged his team to learn from the game but not take it all too seriously.
“The mentality was still the same from us but we just couldn’t get the ball in,” the Belgian admitted.
“Then we played pretty good but we didn’t score and that made a difference and made a mistake with the pressing for the second goal.”
“It’s not the best to be behind one minute into the game but then you still have the rest of the 90 minutes.
“I don’t think we started well. We knew it would be hard from then and we played into their hands.
“We needed 15 minutes to settle. I think we then played well but we didn’t score.”
He added: “Obviously it’s not nice to lose the derby but it happens. Its never nice to lose but sometimes it can be necessary.
“We overcame some bad spells today but we have to learn from this as a group.”