A good manager is currently able to win 3 real games/week with 7-8 good players + 2 correct ones (salary around 10k), because he knows that his opponents have to make decisions too. It's the difference between the managers who win trophies and the other ones. Everybody here supposed they will have to play 3 times against the best possible opponent but since everybody will be in the same situation that won't be the case.
you can do it because you're in the top league of your country so on thursday you're likely to play an easy opponent
lower leagues players mostly play in the cup until they lose, knowing this will happen anyway sooner or later
and IMO nobody should be able to consistently win 3 league games/week against competent opponents, the current economy+game shape system doesn't allow it (excluding former tankers who are speding their bank to play on a massive deficit, which i hope we agree shouldn't be encouraged)
What I love in this game is to have to deal, at the same time, with training and games to win. Can I win 3 games this week, yes or no? If yes against which team I can take risk, against who I'm sure to face his best team, who will give up... ? If I can't win all the games, which game I give up? Which team could give up too? Currently that kind of situation happens 2, maybe 3 times by season and only in top leagues. It's the best part of this game and during a 14 weeks season, it's not enough.
this seems a lot like a lottery: your success depends on how many people choose to play seriously against you
that's also what many players cited as the main reason for not having fun playing in Italy's Serie A years ago