Australia is a sporting nation. They invest a lot of money and effort into sport. Football was never a strong point though.
For its population Australia punches weight above its weight and it's because there's a huge emphasis on sports here.
Unfortunately despite Türkiye being a huge talent pool for footballer players and the general population being football fanatics, somehow we've completely lost the magic we had in prior decades, despite arguably having the best team yet in terms of individual players.
Mismanagement? Not enough money or effort being invested? I don't know but certainly there's something wrong.