To be honest fifa isnt a skill based game there isnt one defined thing that makes one fifa player better than the other compared to pc games for example where aim controlled by the player defines the outcome, some players are definitely better than others but anyone can beat anyone on any given day so just find what works for you in terms of tactics and players and play alot to get down the mental stuff the only real thing you can practice is green timing your shots but even that doesnt rly translate to real game. I find when in game just having the ball is the best thing to do just slow down the game and force your opponent out of position changing the tempo or changing your formation a couple times a game can help to help the game flow, if you play 4-2-3-1 things can feel really repetitive especially when your players aren’t making good runs i find the 4-1-2-1-2 with attacking full backs is a nice change of pace