"You're always measured on results but we played a good game against Arsenal", he told a media conference.
Diogo Jota had the best chance of the first stanza for Nuno Espírito Santo's charges three minutes before the break after he was sent clear on goal by Raul Jimenez's, but Romero pulled off a good save from just inside the box to keep the score level.
"It was a big step backwards, I've got to say", stated Solskjaer.More news: France boosts security at places of worship after New Zealand mosque attack
"Today we got what we deserved because we never deserved to win this game".
"We had decent dominance with the ball in the first half but that doesn't help if you give the ball away and they can counter".
"We've done well, of course". It's the poorest performance since I've come here.
"It's something natural, you can not perform to the top of your levels every single time", said Solskjaer.More news: How the College Cheating Scandal Is Affecting Lori Loughlin & Her Daughters
Solskjaer will have two weeks to mull over the performance while a number of his players head off to join their national teams.
"He's probably got his reasons why he left, so you've got to ask him", he added.
"Sometimes when you say "on the break" people take it as "oh, they're going to sit on top of the ball" but no, that's not what they do".
"Then we will be ready to push again because we're in a great position in the league, we're in the Champions League, but I'm very disappointing that we're not in the FA Cup semis". To try to achieve the same is much, much harder now but we will try step by step.More news: Dee Ford: How new 49ers EDGE will impact defense