If only I knew why I'm not doing well I might have some ideas!
The one thing I noticed is you're using so many red/blue arrows in a basic formation. This could mean your players are being caught out of position more often than normal, and getting tired more quickly. I personally don't use arrows except on the wings or in uneven formations.
Another theory I've seen (which seems to work) is switching players places, e.g. your two ST in different slots, one may perform better on the right than on the left.