Manchester United boss Solskjaer saw his side slip to a 1-1 draw with Huddersfield on Sunday, ending their hopes of playing in the Champions League next season.
The Red Devils went ahead early on through Scott McTominay but were ultimately pegged back by Isaac Mbenza, who capitalised on a Luke Shaw error to level the scores.
Solskjaer has now been asked about his Manchester United side and, speaking to Sky Sports, criticised his side for allowing Huddersfield back into the game.
“Over 90 minutes we weren’t good enough, we missed chances to put the game away, created many chances and didn’t let them in our half really,” he said.
“When you go to these places, stadiums full of energy, we knew if we gave them hope they’d be up for it and unfortunately we did so.
“Sometimes it happens, concentration, application, confidence drops, it was just strange how we changed our approach to the game instead of playing simple. We chose difficult options.
“We are where we are for a reason.
“Over a long season we haven’t been good enough to challenge for the Champions League places.
“It’s not come as a surprise but we hoped to show a better performance today.”
United skipper for the day Ashley Young was also asked about the result.
And the England international admitted the Red Devils would have to go back to the drawing board after a shambolic season.
“I’m not sure what it is,” he said. “It could be a number of things.
“It’s a disappointment now that we can’t get in the top four.
“We’ll have to go away and think about how the season has gone and come back ready to go again.”
United face Cardiff in their final Premier League match next Sunday.
Solskjaer masterminded a 5-1 win over Neil Warnock’s side in December but, given their poor form, faces a big fight to secure three points.