This isn't the first time that Ancelotti was unable to win either Laliga title or the Champions League. Last two seasons, Madrid lost to City in the semifinals and Xavi won Laliga. The total disgrace of Madrid this season wasn't the fault of Ancelotti because we all know how experienced he is in the coaching field. Madrid had loop holes in their team, which affected their performance. They also suffered from injuries.
Player injuries, slow adaptation period, and Toni Kroos retirement are some of the reasons why Madrid has experienced a setback this season, simply put Ancelotti is facing a difficult transition period. In the January transfer market, Ancelotti also did not bring in help by recruiting new players, but Raul Asencio has helped a lot in the defensive line. Ancelotti cannot be blamed entirely, he has given his maximum effort. Last season Ancelotti succeeded, this season he may be unlucky.