We all know if Hazard is a great player with exceptional skills. He showed it when he played in Chelsea and in Belgium national team. Unfortunately, he is unlucky in Real Madrid. He got some injury several times and cannot show his best performance till today. Actually, we don't really know what's happening with him but one of the reasons probably is about too much absence and his physical health.

Yep. If we look at how he plays, his typical who can play in some positions, he probably can adapt quickly.
I also believe he is a friendly person as well, so he can easily communicate and get good chemistry among the Real Madrid players.
Mbappe is a perfect future striker for Real Madrid. Ancelotti can put Mbappe-Benzema-Vinícius together in the front line.