From the BBC Sport website (sorry I dont know how to link this).....
The most common formation you will likely see in British football is the 4-4-2.
It's made up of four defenders, four midfielders and two strikers.
It is an adaptable system where you have strength in midfield and plenty of width.
Having two strikers means that the front line has extra support rather than having to wait for the midfield to reach them.
This formation, like others, tends to free up the full-backs, who will have more time on the ball than midfielders, particularly if the opposition is playing 4-4-2 as well.
Maybe you need to more be more flexible??