What you said about Juventus was true, it was seen last season so that Juventus' performance was very inconsistent from the beginning to the end of last season. But for next season I think there will be a little difference in their performance and if it still looks the same then Juventus management really doesn't care about the development of the team. In fact, a team like Juventus should be able to compete at the top of the standings because their target is not only to qualify for the UCL, but it can be more than that if they really want to have a different team development in each season.
It has been about about three seasons now that Juventus performance has been inconsistent, and all is due to the lack of quality players to strengthen the team. If Juventus were a team that focused on signing great players their form would not have dropped like this,and they may have even won the champion league they was dream for. I remember a few seasons back when Juventus was in great form. They always performed well in both Serie A and the Champions League. If Juventus wants to compete in Serie A next season, they have to sign more great players to strengthen their team. If not, they will still not achieve anything, and they will continue to struggle for a top-four finish every season. Even in other competitions, they will not go far.