what I think the performance has decreased a bit is Modric (central midfielder) because currently he is 36 years old and of course his stamina has decreased a bit
So for the midfielder, it looks like Carletto should try to find another young and competent one
Ancelotti doesn't need to look for other midfielders, they have enough midfielders right now. If Modric cannot play at his best, Real Madrid has Camavinga and Valverde as the substitution. Real Madrid also still has Ceballos as another alternative for the substitution. So, there is no need for other new midfielders because Real Madrid has some midfielders. If Real Madrid wants new players, they are better to look for strikers, especially center forwards. Jovic and Mariano Diaz seem to leave, they will have only Benzema as a CF. 1 CF isn't enough for Real Madrid because they will play in some competitions (UCL, La Liga, Copa Del Rey, and Spanish Supercup).
Benzema definitely had a stellar season performance, but he cannot be solely relied upon for the entirety of next season, he's definitely going to need a back up and Jovic and Diaz are definitely of great prospect, but you'd understand their decisions if they choose to leave, They don't have all careers years on their side to play 3rd/4th choice strikers, when they could be first and at least second choices in some other clubs playing in European competitions, maybe not as big as Real Madrid, but there will still be something to write about their career other than playing 20-60 minutes in total for an entire season at Real Madrid.
True , it's doesn't guarantee as well that benzema would have the same great season as the previous one , especially in his ages ... where usually players get injury more often .. get tired faster etc it won't as prime as used to be. They for sure need a striker regeneration .. jovic didn't deliver it so yeah when he leave , ancelotti need to looking for other options.
So far theyhave not a single transfer target to back benzema up , this is indeed strange decision by the board.
Actually, Real Madrid are already planning to bring in a new striker, we all know Real Madrid are competing to bring in Haaland. But in the end
Real Madrid had to accept the fact that they were unable to compete with Man City, because Haaland chose to join Man City. Then the next striker
that will be brought in by Real Madrid is Mbappe, which Real Madrid is very sure this year Mbappe will soon join Real Madrid, after Mbappe turned
down several contract extension offers from PSG. But Real Madrid had to accept disappointment a second time, because in the end Mbappe changed
his mind after PSG gave a very fantastic contract to Mbappe.
Maybe because of Real Madrid's failure to sign one of the two strikers I've mentioned, made Real Madrid a little frustrated and chose to bring in players
for other positions first. But I hope Real Madrid management can move on from their failure to sign Haaland and Mbappe, and can find another striker
to buy. Because like you said Benzema is not young anymore, so Real Madrid must prepare his replacement from now on. Moreover, Luka Jovic proved
to be a failure and could not make a good contribution to Real Madrid.