basically look up cards and even attempt to build the deck ur trying to counter by building the deck ur trying to counter and dueling with it in unrated u learn the mechanics of the deck and each new card inside and out so when u come face to face with soothing like that you know how to counter it this method is know to work at least 85% of the time but some skilled duelist out there will fin different methods and ways to sue the card when in that kind of situation your goin to have to rely on your skill instinct and knowledge for the game with this said this is how people and duelist can win even in the most difficult situation.
With the other 15% being able to surprise u wit new combos wat will hlp u the most will be patients, not over think and the knowledge of the game with that being said good luck to u all have fun dueling