If they want to compete for the Scudetto, Juventus must recruit several players for next season because the strength they currently have is not strong enough to compete. Building a team with much younger players will make it easier for coaches in the long term so they can adapt and be solid every time they play. Juventus' current strength is not very strong and they have to replace several players who are already old.
One of the reasons may be that he has experienced players but there is no guarantee that he will be able to compete for the title. Just like what happened last season where they were unable to face several crucial lags by relying on several experienced players because they were inferior in quality to the opposing players.
They have to do that, because other teams also have a better composition of players than them, so Juventus also have to make changes with touches that can help them next season. They are not consistent enough to be able to compete for the Scudetto title, therefore they must have players who have a winning mentality and this is also the coach's job to be able to develop the mentality they need.
Juventus is a big team and even before they dominated the league, it's just that with some of the problems they faced, they had to decline and that's what happened in the last few seasons. However, recently they have also shown something good and it is a hope that they can be even better and return to tough competition in Serie A.