That's right, Madrid experienced a storm of injuries last season, which made it difficult for Ancelotti to rotate players, especially in the defense area. In the January transfer market, Madrid also did not recruit new players, but they were helped by the presence of Raul Asencio in the main squad. Ancelotti cannot be blamed for Madrid failure in all competitions, maybe if other managers faced the situation, they would have had much more difficulty. Alaba, Militao, Carvajal, had long injuries at the same time, Mbappe integration into the squad was also a bit slow at first, Toni Kross retired which made it difficult for Ancelotti, that's a series of reasons that caused Madrid to fail last season.
All of these problems occurred purely out of Ancelotti's expectations. Initially this coach really believed everything was fine in all squad positions. And after that Ancelotti wanted to make changes and strengthen the attack line to recruit Mbappe. But unfortunately the problems came in a row and made Madrid fail to win titles in any competition. In this case there is no need to blame and we must leave the bad past and now Madrid has Xabi Alonso who will provide a positive change. Rest assured that Madrid will be even better in the new season.
I wouldn't put the blame on Ancelotti or the players, because the team lacked the quality of a good defense and midfield due to injury on their players which started in the beginning of the season. Ancelotti has done his best for the club and he has to leave, let someone else take over. If a coach continues winning trophies, no club would replace him.