Personally I will attribute Man Utd unstable performances due to dip in form by almost all the players since Eriksen came back from injury he had been a shadow of former self, Casimero too had been woeful, DeGea too showed his own lapses by gifting West Ham a cheap goal, the likes of Antony, Rashford, Sancho are all playing at a mediocre level Weghorst has minimal input to the team, Bruno Fernandes has lost his creative passes, however I believe Man Utd will still scrape through and take up their chances of UCL qualification despite their dip in form because of their one game advantage over Liverpool probably the team will turn up for their remaining matches.
if you can see Man United's performance as a whole maybe you will reconsider making Man United your favorite team. as we know, when MU lost against West Ham with a score of 0-1, we can conclude that MU has not been serious or consistent in every game. maybe you prefer MU more because the upcoming match Man United will be host to Wolves.
but indeed this is an opportunity for MU to be able to add more points after yesterday's defeat and Erik ten Hag must arrange a slightly good strategy to use an attack formation.
but if you bet on MU I think you have the courage to take all the risks because surprises always happen and MU often makes unexpected carelessness. I think you should have another better plan.