I am getting similar results. Finally gotten Portsmouth promoted to the EPL and I tried playing 10 games. 2 wins 1 draw and 7 losses. I restarted and tried going on holiday while instructing my Assistant Dennis Bergkamp to use the same line up and tactics. The results from 10 games : 6 wins 1...
I have loaned Rhian Brewster from Liverpool for League 1 and the Championship using this tactic. He scored 32 goals in League 1 and 29 goals in the Championship
I had started a new save with Portsmouth and I tried this with a few friendly matches. Results were really average and I was contemplating changing to another tactic but decided to persevere.
League 1 starts and I am roasting the opposition with Portsmouth. I signed the following players...
Similar thing is happening with my game. 10-12 shots on target. No goals. Opponent has 3-5 shots and they get 2 goals. I have also struggled to score goals no matter the tactic. Probably best to wait for a new patch or something. This is incredibly frustrating