Ralf Rangnick's men wished a 71st-minute equaliser from 1/2-time replacement Edinson Cavani after Allan Saint-Maximin scored a first rate early opener, and were indebted to David de Gea for a sequence of exceptional saves.
It was United's first match on account that December eleven after a Covid-19 outbreak compelled them to close their training complex -- Victor Lindelof turned into absent from St James' Park after testing superb.
"No sixteen-day smash in the middle of a football season goes that will help you," Maguire advised Manchester United's professional website.
"The education floor has been close and half of the lads gambling today are getting better from the virus, so of path it's now not going to help us.
"We've had human beings with symptoms, people without signs -- it is been a real blended bag for everybody at the soccer membership and it's been a tough time."
But the England worldwide defender said United couldn't make excuses for their sloppy performance.
"We've got to stay at the ball, we've got to stay active and we've were given to play the ball in their half and we failed to control to do this," he said.
"You can examine that and ask whether the ultimate sixteen days had a massive effect on that because it seemed like we ran out of steam out there.
"A point in the long run is a truthful result, but it is a end result that we are disappointed with."
The draw way United are seven points behind fourth-positioned Arsenal with games in hand in advance of Thursday's conflict with Burnley at Old Trafford, however Maguire stated they might be better after their tough night at Newcastle.
