We could buy lewandowski and we would still struggle because we aren't creative
We would be more creative if our striker would move more.
People don't seem to understand LVG. His tactics is good, but his handling of our striker and winger isn't, and it makes a big problem to his tactics. If anything, Herrera is creative and Mata isn't bad either and if there is a hole, he will find it. So it should be clear that the problem is the striker, who doesn't have enough movement as none of our creative players can find a way to pass enough good balls to him. It can't be all of them.
Against Tottenham and Newcastle we had 2-3 great counterattacking chances end every time Rooney, Depay and Mata have managed to make absolutely nothing from it. That has nothing to do with the tactics, but with them (this is where I blame him - we need a better and faster striker, plus one of the wingers have to be more direct and fast).
If the opponent is any good, his teams will not create to many half chances, but will still have 4-5 big chances at least, because he doesn't want the players to risk to much. So if you score half your big chances you will win, because on the other end the team is compact, controls the game and will not concede if the players are the ones who can do the job and we have these players.
If we had kept the shape today we wouldn't have conceded the first goal, but OK it does happen.