The Norwegians – who had Celtic duo Kristoffer Ajer and Mohamed Elyounoussi in their starting XI – were streets ahead of the Romanians in Oslo on Sunday, with Erling Braut Haaland scoring a hat-trick.
Hagi played 64 minutes of the match and was highly critical of the visitors’ display. He appeared to aim a swipe at manager Mirel Radoi too, saying that “you have to ask him” why Romania did not create any chances.
"It is a result we did not expect, it is a big disappointment, but this is not the face of the national team,” said Hagi.
"If we complain after every match, even after painful results, it's not good. We just have to look to the national team's next match.
"You should ask the manager about why we didn't have chances.
"You run after the ball for four or five minutes then when you have it at your feet you can't do anything. You lose your energy, your breath, and all you can do is draw a foul.
"We are at the beginning of the road with the new coach and we could not apply on the field what is transmitted to us from the sidelines.
"I'm very upset so I don't want to say anything stupid.
"Football is a collective sport. We didn't play well, you could feel it on the pitch and I'm sure you could see it on TV.
"When you don't play well collectively you can't be efficient individually."