Trust me, as a Manchester United fan, I'm more than aware of how woeful we are and how that's been the case for pretty much a decade now. It's embarrassing when you recall all the failed signings and the truckload of money we've spent on said signings. Zaha, Sanchez, Di Maria, Fred, Maguire, DvdB, Antony, Sancho, Telles, Ronaldo (return), Dan James, Lukaku, Mkhitaryan, Pogba, Bailly, Depay, Schneiderlin, Martial, Darmian, and Fellaini. All of those were money and/or wages poorly spent - and that's not including some of the expensive wage loan deals we've had, or some of the younger arrivals that whilst I'm confident won't come good, they at least have time and were not expensive.
Liverpool had a disastrous Premier League campaign (by their self-set high standards) last season by finishing 5th, one summer transfer window later and they're in the mix for the title this season and actually brought in players to fix last seasons issues (mainly the midfield). The mirror opposite of United's awful transfer policy.