I have a feeling that there isn't a good set pieces routine any more as it was in previous Fm versions. As in real life goals from corners are not happening in every game. The same happens here and it helps the game become more realistic. I remember in previous versions (I think it was FM11) I had downloaded a tactic where I was a achieving at least one goal from corner in every game. I was winning yeah but it made the game so unreal that I got bored and started creating my own tactics ever since...