Mate, I can give you some advise that might greatly increase your result when you holidaying.
When you holidaying through the season then your assistant manager is responsible for picking the team but this tactic has 2 generic roles: Wide Midfielders and AI isn't able to recognize all modifications that were made to these generic roles and it just don't understand what type of players you need for these positions so the assistant manager usually picks totally unsuitable players for these positions such as Central Midfielders, Defensive Midfielders or Full Backs but you need regural Inside Forwards for these positions.
I recommend you before to go on holiday pick the strongest and most suitable starting eleven for this tactic and when you go on holiday "tick" these options: "Use current starting eleven when possible" and "Use current match tactics".