I believe it is because they are still injured IRL and you use the most updated rosters.... Not like there isn't a plethora of quality mids to choose from. Try this lineup:
Neuer
Lahm, Boateng, Hummels, Schmelzer/Badstuber
Muller, Kroos
Gotze, Ozil, Reus
Gomez
4-2-3-1
makes use of Gotze and Reus' speed and passing abilities, plus Kroos and Muller are very good in the middle.