What's going on with Kylian Mbappe at PSG?

Mbappe was bound to slow down a little, but the ongoing slump at PSG has many factors.

source https://www.espn.com/soccer/paris-saint-germain/story/4292784/mbappes-form-not-awful-for-psgbut-contract-issues-and-fatigue-a-cause-for-concern