[NEED HELP] Which one is the best? One formation or several formation?

[Adonara SC]

i always start with same formation 451v change only in game, depending on my oppo formation. I always play with my 4line defences and flank attack.My changes will be 4141,451flat, 43mc21 and 4231.

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ahh..that's a clever strategy though. but, my another question is, how you deal with a match that you can't view? do you still set 451v from the kick off until the end of the game??