Well, if Juventus does not add more players to their team, I don't think they will find it difficult to win their games next season. Juventus still has more strong players available to win their games, because their players over the age of 30 are not more than those under the age of 30. Juventus can only get players that will improve their performance because they are unable to maintain their winning ways.
It is impossible if Juventus will not do anything in the transfer market later. Because, they will definitely do many things to strengthen the club. Moreover, they are also seriously changing their coach. And now, there are several rumors regarding the players that Juventus wants.
In fact, there are many players who are rumored to be joining Juventus.
Try checking this:
https://www.transfermarkt.com/juventus-fc/geruechte/verein/506And what is currently hot is Juventus' signing of Douglas Luiz, an Aston Villa player who has reached an agreement. He'll be leaving soon. This is the second signing carried out by Juventus this summer.
https://www.instagram.com/juvefcdotcom/p/C8dV4AVIU3h/Then there is Real Sociedad attacker, Mikel Oyarzabal, who has also reached an agreement. He is the top striker in Spain and his talent is beyond doubt.
https://www.juvefc.com/juventus-wants-to-sign-versatile-real-sociedad-attacker/