Here is the final version of the 4-2-2-2 formation, playing with two CMas - which has won La Liga with a team outside the big three.
The FM22 Tactic
TrainingThis is so key to your team understanding this tactic.
Weekly Match prep, including teamwork and match tactics are needed to help the players understand what's going on, as well as Match Review after each fixture.
Do this early and throughout the season and you will see the benefits.
For the individual players, train them for the position they are going to play and the tactic will benefit.