Eddie Howe says that VAR should have been used to full effect for what he believes was the turning point of the 4-0 defeat against Leicester City.
Howe's side were beaten as the Foxes ran riot in the second half but it was a penalty just before the break, conceded by Jamaal Lascelles for a foul on James Maddison, that set the ball rolling.
When asked if VAR should have been a bigger factor for ref Peter Bankes, Howe said: "Definitely. It's what it's there for.
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"I don't understand why referees are so reluctant.
"I think if he does, he reverses the decision.
"I thought our response was pretty good and there was a lot of good play up to the final third but our decision-making in that last bit was off.
"It's down to cohesive team work that we haven't quite refined yet.
"There's still a lot of work to be done. The players won't have felt inferior.
"They will have felt competitive and hopefully they reflect in the right way. "Every game is difficult."
Looking back on the game overall, Howe said: "I thought for all the ball we had around their box, we didn't really open them up, then in the big moments we didn't deal with them well enough."
Newcastle travel to Liverpool next and Howe said: "Obviously Anfield is a tough assignment for us in the next game but we will try everything to try and win the match."
"We know they have quality players and they hurt us when we allowed them space but I don't think we should lose heart from the majority of the game. ]
"We just need more of the big moments to go our way.
"We're in a huge fight to stay in this division.
"We'll need to use the pain and feeling from today to help us in our journey this season."
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