Iraola said: "At the end you have lost the game and it is always ugly when you complain after you have lost the game. But the truth is, we should have been 2-0 up after the first half.
"Especially the first goal that VAR overturned, it was a rebound and he is not the one scoring the goal. According to the rules, it is not on purpose just a rebound and after the play keeps going there is a pass and another player scores and VAR to overturn it. I don't understand it.
"The second goal is obviously a big, big, big mistake. You whistle the foul, in two seconds there is a goal, and then you can see it in the replay there is no foul.
"Obviously you can't give the goal because you have whistled and that is a big, big mistake that has cost us a lot.
"It's true that he (the referee) makes his (Premier League) debut. He may be very good, we don't know the level. But obviously he has had a very bad game. I don't know if it was difficult but obviously he has not had a good first game.
"Probably he is a very good referee and after he makes good decisions and has a long career in the Premier League and referees for a lot of years. But it is true his first game was not good in my opinion."