the task is difficult because there is no money to spend
the budget is very limited and therefore this makes the task very difficult
in his previous experience, coach Allegri did not hurt, this time he has more difficulties due to lack of money
Maybe Allegri can still give a good result at the end of the season with their current & additional players. But, their focus can be on the Coppa Italia or to be in the Top 4
(if juventus can't make their performance better). I think Ronlado's departure at a time when football was only able to give a permission for spectators going to the stadium after Corona made it a little difficult for Juventus to get funds. Transfers made at beginning in the season did not meet Allegri's expectations. And I remembering how Allegri find difficult times after bringing AC Milan get a Serie-A Title. After that, the performance of the Milan players went down and Allegri become get fired.
If Juventus can't make a better performance then there's no way Juventus will end the season in the top four, even for the top six if Juventus' performance continues to deteriorate then it's difficult for him to finish in the European zone. But we also still expect players who are currently injured to recover soon like Chiesa and Pogba, who knows Juventus will return to their best form when they can play again. At least, if they recover quickly then Juventus won't need to sign any more players because it will ruin their finances even more.