Of course, Juventus' performance needs to improve, be it in their domestic league or in other major tournaments. I have seen Juventus' performance in the European League and considering all the other teams, Juventus' performance there was also weak.
In the Italian league this season, Napoli won the league title by defeating Inter Milan and AC Milan, but Juventus could not finish the season in a good position there. If they do not have financial problems, then they should plan for this team and bring more players to the club if necessary, and still try to improve the club's performance.
Clearly this is a setback experienced by Juventus last season and now they are starting to overhaul the team and in the Europa League and Serie-A itself last season there was not much that could be done because Juventus looked so weak in terms of defense. Napoli, Atalanta and Inter Milan looked much stronger last season and the three teams even had the same chance of achieving the Scudetto, although in the end Napoli managed to achieve it.
Igor Tudor is expected to bring big changes to Juventus and the hope is that it can be much better than the previous season when Thiago Motta was the coach. Even though it looks difficult, we can see Igor Tudor's ability in the Club World Cup and I think it is much better than the previous coach's method.