Attack wins matches,defense wins championships!

[Wiesse]

So the rule of thumb is—
-If you're the favorite: attack and grab a lot of goals. Low press and zonal marking to save energy. Use offside trap and 3 defence and maybe a DMC too if required. Two strikers are also ideal
-If against evenly matched opponent: play your natural game.
-If they're the favorite: Park the Bus, but keep the ball. Defensive, mixed and short passing, no CA force, low press, man-to-man marking (it's extremely helpful to defend, tho zonal can be used to save energy). And of course a suitable formation, like 4-5-1V, 5-2-2-1 or 5 defence/4 defender+1 DMC (5-6 players in own half)

I am most of the time favorite, but the attacking mentality isn't always good against weak teams. you can grab goals if you play with normal mentality.
The orders always depends on the oppenent.