Your center backs have basically no protection from the flanks, so either they spread out and cover the wide spaces, leaving you vulnerable in the channels, or your opponent has a ton of space out wide. From where are you conceding shots/what type of shots are they?
As far as your attack goes, you really only have one player who's going to stretch the defense horizontally, so despite your "work the ball in" instruction, most of your shots are going to come from the center of the pitch, which is going to be crowded and compressed, so you're going to be taking a lot of speculative shots and half-chances. Additionally, your Raumdeuter role isn't going to be very effective in that setup because he's going to have very little Raum he can deuten.
Basically, you need to introduce some balance and width to your attack to open up spaces in the defense, and you need protection for your center backs out wide, lest you fall victim to the same thing to which Guardiola's teams have consistently found themselves vulnerable: counterattacks down the flanks.
