When are our players ever in good condition? They are always in bad condition
They have been at some point. I don't think they suddenly just don't care or don't want to win a title, or that they are suddenly all really poor players who struggle to outplay Crotone. But we get a few injuries and the players who are left keep playing all the time in key areas (midfield and attack) and we go from a strong squad to an average one.
The decline/fitness of Dybala has been a huge loss this season, he decided games when he was in good condition. Kulusevski cannot yet do that.