Announcer summed it up perfectly. United look disjointed on attack. Players are making good runs but no one is ready to supply service to them, balls are being put into dangerous spots but no one is ready to make a run there, two players going to the same spot, etc.
Classic examples of a team that doesn't have attacking direction. They're told to keep shape, keep the ball, and essentially play pickup ball on offense. Sometimes the individual quality they have comes through, but you're almost always left thinking they could offer a lot more.