UEFA European Championship 2021

Maybe I am a bit of a heretic but I tend to think the best policy in tournament football is to pick the team and set up best equipped to beat the opposition in front of you. If that means changing personnel and formation so be it.

To me it is about doing what needs to be done to exert strengths on the opposition while limiting theirs and trying to expose opposition weaknesses.
That does not always mean picking the same team and way of playing from game to game imo.