There's an issue with both. We had a problem breaking down defensive teams before Bruno. We said the issue was the lack of a creative midfielder. We then said Pogba not being in the side was the issue. Still struggled. Then it was the lack of a right winger. We have one now. Still struggling to break down defensive teams. Scorelines have flattered us at times. It's getting a bit ridiculous. Nevermind our defensive shape is usually all over the place.
But players have to shoulder the blame. Outside of Bruno, Cavani and Ronaldo, we don't seem to have any players who want to be at the forefront driving the team forward. Maybe Greenwood, but he's on the young side. They all seem happy to sit back and let someone else do it for them, then we get stuck with players having inconsistent performances and shambles like the Europa final, December last season, etc.
Nobody seems eager and hungry to step up and make us a force again. They all like to talk about trophies, winning, Manchester United, blah blah, but when it comes down to match day, they will put in a half-arsed performance, then come out with the "not good enough" nonsense, then do the same thing the following week.