Macron really didn't have a mandate to begin with. He beat Le Pen by a point or two in the first election. We're talking c. 22% of votes for Macron. In the final election all of the other candidates voted against Le Pen, not for Macron. He was a manufactured candidate with the PTB knowing how to split the seams in the voting system and people figured that out quick.
So we're looking at around 80% of the voters who didn't really vote for him in the final election. They voted for Le Pen or against Le Pen. Figuring some of those who voted for him now wish they hadn't, he really ain't get shit for support from the French.
Guy needs to apologize, take his hat and go rather than tell the 85% of the French who don't actually support him to suck it up.