I think that's the problem because Mbappe has through an hard season in Real Madrid he even still struggling and unable to in form but unfortunately Ancelotti still pushing Mbappe to playing for each matches which this is one of the mistake which made by Ancelotti and actually some of young players can fill the position of an attacker such as Arda Guller or Endrick but unfortunately Ancelotti didn't trust these players to playing regularly and in my opinion i think it's time to putting Mbappe to the bench and give other players to gets more minutes to play and maybe if Ancelotti can do that then Real Madrid will be able to playing more consistent
Is your advice for Ancelotti to be benched Mbappe for the other players you mentioned, to play? Inasmuch that Mbappe has missed two penalty kickouts, that's not enough reason to have Mbappe benched because his presence in every match of Real Madrid is quite felt. The least Ancelotti could do is to stop Mbappe from being the penalty taker of Real Madrid, that sounds okay that way than not to bench him for another lesser player, who wouldn't match up with Mbappe's qualities in the field of play
Even Mbappe accepted his fault in their last game which they lost 2-1 to Bilbao regarding the penalty he missed in the 68 minutes but that's not enough reason Ancelotti to keep a player like Mbappe on the bench. We all know that Mbappe is a good and talented player may be he is just having some difficult time in the club may be he has really blend with the team system of play, he should only be given some little time to prove his Worth in Real Madrid.
Just as you have said concerning taking penalties for real Madrid he should hold on for now if Real Madrid has a penalty to play they should get another player to to so until he finally understand that team system of play to avoid more pressure on him because he has not really been doing what was expected for him to do for the club.