In an interview with a Spanish media outlet, he said that Mbappe along with his teammates, will have to work harder.
Real Madrid is different from PSG, Mbappe is not like Ronaldo, he is still very far away. I think he has to be able to integrate with the team and play as a team. He has good ability, but in La Liga it has not been able to make him a big star. Another problem is that the team's current support is incomplete, many Madrid players are injured. So the team's support seems to be decreasing. I think Mbappe still has a lot of time to develop, he just went to La Liga and he will improve a lot.
Mbappe is undoubtedly one of the most talented players of the moment and impressed by his talent, Real Madrid signed the player after a long wait and he signed the contract but with a long-term plan. That means Real Madrid must have plans for Mbappe. Many people are commenting that Mbappe's performance is not very good since he came to Real Madrid, but the reason behind this is that he just came to Real Madrid from a different club, so it will take some time for him to adapt to Real Madrid. As we have no complaints about his skills, it shouldn't take long for him to return to consistency in the Real Madrid jersey. Maybe Real Madrid are not worried about Mbappe's performance but Real Madrid are worried about the engine problems of several of their players at the moment.