Newcastle United were dumped out of the Capital One Cup by Sheffield Wednesday last night.
Newcastle have failed to win any of their opening six Premier League matches, and they were dumped out of the Capital One Cup by Sheffield Wednesday in their most recent outing.
Krul has seen positive signs within certain matches, though, and believes that with a greater cutting edge, Newcastle would be doing much better.
"It's confidence," he said. "We are doing alright in some areas but the end product just isn't there.
"You have to be honest enough to say that we are getting up there and playing some good stuff to get there, but it's all about the final quality in the final third, which just isn't happening.
"I'm not just blaming the forward though because we need to look at the whole team. Defensively we haven't been on top form yet - nobody has been. Everybody needs to grow now. We need to come out and show we are real men."
After their defeat to Wednesday, Newcastle have scored just one goal in their last four matches, with Steve McClaren making a poor start to life in the St. James' Park hot-seat.
McClaren was brought in to eradicate the problems of last season, as the club battled to beat the drop, but he has failed in that remit so far and his position is already starting to look vulnerable.
Newcastle will need to improve quickly if McClaren is to keep his job, but the North East side's fixture list is not particularly welcoming.
The Magpies face Chelsea and Manchester City in their next two matches, meaning that things could get worse before they better.