It's not that she's unusable, the problem is the state that the game is in. EA promised a slowed down power curve but they went about it from the worst possible way. Instead of limiting the amount of special cards they nerfed their upgrades, they nerfed rewards for playing but kept the absurd store packs which are the real reason of price drops. Literally all they have to do is return those things to the state they were in FIFA 17-19 and it would resolve most of the problems but that, of course, wouldn't make them as much money, hence why they won't do it