Now that they have been suspended from European competition, they will have more time to focus on Serie A. It's not an advantage, but they have to make the best of their problems. Yes they performed well as a team, but not as management which we can't help but say that they are more responsible for what Juventus have experienced this season.
In fact, this will still be an advantage for Juventus, as a less busy schedule will allow them to fully focus on Serie A in order to secure a place in the Champions League for the 2024/2025 season. Moreover, the Conference League is not such a prestigious tournament to set itself the goal of winning it, and in the end it would not bring big income for the team. Perhaps even without this, Serie A would still remain a priority tournament for Juventus.
Not qualifying for the Champions League has been good for Juventus. Because the team has not been able to dominate Serie A for a long time. They have not played well in Serie A in the last three seasons. And now the condition of the Juventus team is not good. The party is not stable. And so the team cannot perform consistently. For this reason next season Juventus will have enough time to stabilize the team and focus only on Serie A. If Juventus aims only for Serie A. And if the performance of Juventus players is stable. Then maybe Juventus will be able to dominate Serie A again. But there is no way to say for sure whether Juventus' performance will be stable next season.
If you say it's an advantage for them, not really, if it's not an advantage, not really, because as you said they don't play like the Champions League, and what they achieved in the previous season was the lowest level of European competition.
As I said before, they have to make the most of their "sanctioned" moment which results in a less busy schedule this coming season. Serie A is the main focus apart from the local competitions they participate in every season.
Yes given their decline in the last few seasons in Serie A, they can make this moment to rise.