You should play with your strengths, dosnt really matter about the other team if you keep changing your formation to counter the others you will probably keep getting drews as your playing defensive football, you need to stick to your formation don't keep changing it as I found the players don't like it,
So I would suggest keep you formation and just change the tactics to suit the match and whilst the match is going on keep a eye on the other players and see which part is weak and play through them, if you have fast players play long ball you need to study your team and get the best out of them