Juventus currently have many weaknesses, so Motta will have something to work on. If he managed to achieve results once in Bologna, this does not mean that he will be just as good at Juventus.
Juventus is now working on players to improve their performance next season, I believe the management understands where their problems come from, with their confusing performance the previous season. Juventus played well from the start of the season but struggled at the end. However, I believe that the players cannot be fit to play throughout the season, that is why some big teams use second tier players for most of their games to allow them to rest. But Juventus lacks good players to replace their key players. And it is not like they had financial problems, they relied on their current players last season.
Motta on the other hand, has no experience managing a big team, but he was successful with Bologna last season. He built the team to finish in the 5th position and qualify for the next Champions League. Juventus signed a new midfielder from Aston Villa, swapping Enzo Barrenechea and Iling Jr for Douglas Luiz. We saw how well the player performed in the Premier League last season, and I hope Motta can improve the club and win his first Serie A title.