For the money they've spent and the prestige of those players and expectation when they signed - Pogba, Sancho, Maguire and the others, all super hyped, plus their own talented youth system players, this Man Utd simply should be doing a lot better. Those players they have are not terrible but they have all the wrong characters and just give up too easily. Liverpool are probably at the peak of their powers now under Klopp so it's a huge mismatch in terms of form and momentum.
United do still have Fred, Lindelof, Lingard etc but those kind of players are fine in a squad, it's the big players who don't pull their weight. Pogba has been an incredible flop, as has Maguire.