my tactic is a 4-3-1-2 formation, with my midfielders on the left and right working the balls into the box for my strikers and/or my attacking midfielder to gain chances with.
my previous formation was 4-1-3-2, with a defensive midfielder instead of an attacking one, i changed it since it wasn't doing much for our defence, plus our gouls were drying up fast due to our low attacking force.
it seems to be working well enough, since my Derby team has gained promotion from the Championship twice, coming second and first, reached the FA Cup final twice, winning it once, i have gotten into the EURO Cup twice now, reaching the semi's in my first attempt (currently doing my second attempt).