I think you must play a different game to me
I always find the second half easier due to manager inactivity, by the time the second half starts at least half the managers have given the season up and some even tanking.
My results for this season as an example
1st half 5W 2D 6L
2nd Half 11W 0D 2L
I play the same tactics etc on all the season. I also find that when i get troll results they are always on the 1st game.