“Yes, of course [it’s bad],” he told BT Sport. “We lost the game. It’s not the way we wanted to begin the competition.
“I think we were a bit unlucky today as well. Overall we faced a Zagreb side team who was committed.
“I think they got a lot of advantages today [from the officials] and ourselves, once we were two-nil down it was very difficult with ten against eleven players, especially against a team who defends in their half. We had to score two goals and it was too difficult.
“We gave it our all until the end, but unfortunately we couldn’t come back.”
Wenger also had a strong opinion off Giroud’s sending off:
“I think on the first yellow card he is unlucky because it’s a foul for us. On the second it’s an accident, he didn’t foul on purpose. They [Dinamo] got away many times with obvious fouls but without yellow cards.
“We have to take it on the chin and focus on the next game. It is like that. I think on the first yellow he was unlucky with the decision but he should not have protested.
“When you don’t win I have to look at myself. I deeply don’t believe that the loss is down to the fact we changed the players, but we haven’t won so I’m in the same boat as the players.
“We have enough games to come back, we focus to win our next home game and I’m sure we can beat Zagreb at home.”