Johnstone was frustrated by the retaken penalty and the fact the Baggies again came away with nothing, with West Brom having failed to win any of their opening nine league matches for the first time since 1985-86.
Centre referee David Coote ordered the spot-kick retaken because Johnstone was thought to have moved from the goal line when Fernandes wanted to shoot the ball. "We didn't have composure or quality to get the second goal that would have made it more comfortable".
"Hopefully we can hit some form like we did towards the end of last season".More news: Jurgen Klopp calls on Sky and BT to change hectic fixture schedule
"But wins are the most important, of course, because at the end of the season nobody will ask you how you played, if you were wonderful".
The midfielder used the skill against West Bromwich that earned Man United all the three points at Old Trafford.
The Norwegian has spoken of the difficulties in preparing for fixtures given the congested schedule and distraction of the three worldwide breaks to date, and hopes an extended period together can lead to improvements for his side following an inconsistent start to the season.
"This one is way below par but we got the first win and sometimes the three points are more important than the performance, even though we know to get points and to move up the table we have to play better".More news: Watch `Torbaaz` trailer: Sanjay Dutt is back and fighting against the terrorism
While Solskjaer was relieved, Bilic was frustrated by the officiating and felt Fred's foul on Gallagher in the build-up to Fernandes' penalty should have been seen by the VAR. "I'm really disappointed with the decision". I don't understand why he overturned the penalty. I know the players have been travelling away on global duty, and we just had this morning to prepare for this game.
"I don't think we have to build from here".
"The other penalty, with the new rules, it's handball".More news: Cyberpunk 2077 Leaks Inevitable As Retail Copies Are Out In The Wild