I doubt that Alaba will be able to return to normal and it looks like his injury is quite serious because up to now there has been no sign that he will be able to join training. Maybe Militao seemed to have played several times at the end of last season but he still needs time to get everything back together. Now the only fit left is Rudiger and the latest news is that Vallejo has returned to Real Madrid after his loan contract with Granada ended.
For Leny Yoro, Real Madrid continues to try to get the Lille player to come this summer because if not Real Madrid will have a central defender crisis next season. Apart from that, previous rumors were also linked to William Saliba from Arsenal and to be honest, if Real Madrid can get these two new defenders it will make their way to defend the La Liga title as well as the Champions League easier.
Several of the players you mentioned, except for Nacho, who has left, don't seem to be fully expected to be able to guard Madrid defense next season, so Ancelotti is starting to try to recruit new players, although so far we haven't seen any players who are very close to joining Madrid, by the way, Madrid previously tried to recruit Alphonso Davies from Munich, have they officially signed him now? although Alphonso Davies is a left back, he actually performed quite well when coach shifted his position to center back when Nagelsman coached Munich.
There is no clarity regarding Davies' contract with Real Madrid and of course they will continue to try to bring in this player from Canada in the back row. It would be something crazy if this agreement was reached and with Vini on the left side it would certainly make mobility easier in carrying out attacks with Davies.
On the other hand, putting Davies in the defender position doesn't seem to suit Ancelotti's coaching style and every coach certainly has his own way of maximizing his players and that's what Nagelsmann did at Bayern Munich. So this cannot be equated and of course if Davies goes to Real Madrid he will still fill the left back position. Apart from that, I heard that Real Madrid will not pay more than 34 million euros for Leny Yoro and now it all depends on Lille for the final deal.