Di Maria's quality and experience can help Juventus win the Scudetto again, but as you said, Di Maria cannot do it alone without the support of other players. After the midfield problems were resolved, Juventus also had to improve their defense and attack power. The main problem is that the Juventus defense is still very fragile, Juventus must move quickly to find a replacement for Chiellini who left Juventus at the end of last season.
There are several good defenders to choose from for Allegri next season such as Bonucci and Matthijs de Ligt, but the need for a central defender for the 2022/2023 season is still highly expected considering that Juventus quite often rely on 3 defenders for a scheme or formation 3-5-2 . Rumors of Monaco defender Guillermo Maripán also sound good for Juventus, but they are yet to be confirmed.
Although Juventus still have Bonucci and Matthijs de Light as defenders, Juventus must immediately find a replacement for Chiellini. In addition
to considering if one of De Light or Bonucci is injured, Juventus is also less solid if they have to play with a 3 defender formation. Therefore,
one of the main focuses of Juventus should be to bring in a quality defender, so next season the Juventus defense will be more solid. The Juventus
midfield is quite good with the arrival of Paul Pogba and Angel Di Maria, maybe the front line also Juventus should bring in at least one player,
because Juventus lost Dybala and Morata. According to rumors, Juventus are competing for Domenico Berardi from Sassuolo. If it is true that
Juventus managed to get Berardi, this could be good news, because Berardi's performances this season with Sassuolo have been very good.