Alavés coach Luis Garcia Plaza said Endrick should have been sent off in Real Madrid’s 3-2 LaLiga win on Tuesday, after the teenage forward appeared to strike defender Santiago Mouriño with his knee in an off-the-ball challenge.
Madrid led 3-0 in the game at the Santiago Bernabeu thanks to goals from Lucas Vázquez, Kylian Mbappé and Rodrygo Goes, before two late Alavés goals in two minutes made for a nervous finale.
Federico Valverde, Vinicius Junior and Luka Modric were all booked for arguing with the referee.
“The rules have changed, and we have to get used to it,” Ancelotti said. “We have to stop.
“It’s not fair or unfair, we have to adapt.”
Mbappé was substituted in the 80th minute, with Madrid set to face local rivals Atletico Madrid in the derby on Sunday, but Ancelotti said he wasn’t concerned about the star forward’s fitness.
“He’s fine, he got a knock and he asked to be subbed to avoid any problems,” Ancelotti said. “He’s doing well. The team played well, using the ball, looking for chances, transitions, throughballs.
“The team is improving and that’s good for us, we have a demanding fixture list, but we’ve done well since the break and want to carry on on Sunday in a demanding game.”