I’ve never seen Mbappe treat his teammates poorly. Maybe it’s because I don’t watch the La Liga as much but I doubt it.
He acted well when he was given the role he wanted while you can see what he did with Cavani, Neymar in PSG years ago or with Kante in a friendly match of French national team or further to the past with Griezman. If you noticed, it seems Vinicius Junior and Jude Bellingham had conflicts with Mbappe in Real Madrid too.
We will soon be able to know more about it because Mbappe still has a very long career for French national team and Real Madrid or any other clubs.
It seemed there was a little bit of fuse between Mbappe and Kante in the World Cup. Though, Kante didn’t manage to get any minute until their elimination in their game for the third place which was lost to England.
Mbappe is one of the most competent and elite player right now but, it’s okay to accept that, his not so wholesome in character. Being the very best and playing at his level some times gets to him and how he carries himself about his team mates.
When it’s comes to Vini and Jude, I guess you would accept that, it’s not easy having someone just come in your team and becomes the center of everything, the play and fandom while they are good players too and have got years of career games on their side.