Mbappe has been too much praised since his arrival and now when those expectations are not met then Mbappe will be mocked and that makes Mbappe even more difficult with the burden he is carrying now.
I think that is also reasonable because Mbappe deserves to be blamed after his performance has not improved so far and even Mbappe's penalty failure made Real Madrid have to experience another defeat.
Not intending to find fault with one of the players, but in fact now, Mbappe has failed to contribute to the Real Madrid team even though he is a football star who is highly expected to make the team much better but the opposite happened.
Mbappe has indeed failed to execute penalties twice and it is very reasonable to highlight because in the match at Athletic Club's home ground Mbappe should have been able to score the goal on the penalty opportunity which at least could have given the score a draw for Real Madrid. But it was in vain when he was not very good at taking penalties so Ancelotti had to look at other players for that because Mbappe is not a good executor for penalties. And what is quite unfortunate is that this defeat has certainly given Barcelona another opportunity to remain in first place in La Liga for now.
I think it's either Mbappé is still finding it tough to settle down in the club or he's gradual losing it, I mean this is not the first time we've seen world class player come into the Bernabeu and underperformed, too bad Mbappé have joined the list of such players, I think he needs help to regain his form again atleast his own situation is not cause of injury but he might be going through pressure and emotional stress therefore they need to help him get better. Mbappé is a world class player and when in his best form, he does magic with his foot he needs more time to get better, I know fans are so impatient with him but with time I trust Mbappé would bounce back stronger and put smile on their faces again, too bad they lost that match against cause that was an opportunity to get closer to Barcelona on the table. Well, I think yout suggestion is actually right cause if he's always losing penalties then that role should be switched to a better penalty taker in the team, it mustn't be Mbappé.