I can't say Man U played better than Newcastle, but I guess the home field factor played a major role... They were lucky in this match and to be honest their game was much better than the previous ones... Now Newcastle and Devils have the same number of points in the standings and there is a small chance to get into the Conference League if Chelsea lose to Bournemouth, which I doubt...
I didn't watch the game, but truthfully Manchester United's performance was better than before, and their defense was much stronger than the previous ones against Arsenal. In Manchester United's last two games, I think the absence of Bruna Fernandes has had an impact on their performance, we saw many changes in their midfield yesterday, and I wasn't expecting Manchester United to get all the points at home because of how they have been playing lately. It's a huge surprise that Man U was able to beat Newcastle at home since they lost the first meeting at Newcastle's home ground.
Based on Chelsea's performance, l believe no club will be able to stop them from winning games. Chelsea has more chances than Man U and Newcastle to qualify for the next Conference league, I don't think Manchester United and Newcastle would be able to win their next game, since they will face tough opponents. I can't believe that Chelsea will play in other competitions next season.