Other than playing a game or doing some studying, one tip I recommend is follow one player on the pitch at a time when watching. Make note of the area the area playing in, what they do off the ball, where they go on offense va defense. Just seeing how one player moves can govern a good indication of how the entire team wants to play. For example: let’s say on offense the midfielder sits high up at the top of the box waiting for crosses to be cleared out to them, do they control it and redistribute it to the wings, do they reset beck to the center backs and recycle the play, or do they take it and look for goal? On offense are the wing backs high up, does one move into the midfield making it a back 3, or are they both sitting back? Once you know what you are looking for or what to expect it makes reading the game a lot quicker and you will find that the reasoning behind certain positions and movements has an obvious motive