The pandemic and a season in empty stadiums actually affected income of many clubs and Juventus got big financial trouble since then. I disagree to consider Juventus as a no longer ambitious team in latest seasons. It is only performance issues and in player quality as well as transfer budget spent recent seasons, Juventus actually invested for squad development more than Atalanta.
Their declining performances come from players but also from head coaches' bad management recent years. However by signing a two-year contract with Igor Tudor, Juventus are taking risk with their head coach position again.
There are many problems faced by most clubs and now not only Juventus but AC Milan itself has also experienced a decline in performance in recent seasons. Apart from not having a good coach, it may also be influenced by the quality of the players they have so that the team has experienced a huge decline in performance. While teams like Napoli, Atalanta and Inter Milan are in much better condition so that they became title contenders last season.
Igor Tudor is expected to lead Juventus' revival, but if you look at his experience, maybe Juventus itself is taking a big risk. Igor Tudor is also using a direct and high intensity offensive playing pattern, but if the defense line is weak, there will be problems with this strategy.