Honestly (that's just my personal opinion but) with the way he's been acting in the past few weeks after polls gave Far Right far ahead of his party, Macron's been looking more and more and more desperate. He tried debates between his PM and the Far Right candidate, made a big speech 2 days before the election to plea against far right (a speech in which were pointed out his many contradictions), his PM intervined out of the blue in a debate between each party's lead EU MEP (most awkward moment in a political debate I've ever seen, denounced by every journalist union).
His popularity has been dwindling (with reason) since 2017 and only won the 2022 elections by virtue of not being far right (and the people refused to give him majority in the parliement in exchange). In the past two years, he's been enacting austerity measure after austerity measure several of which with zero approval, bypassed parliement to get them into law, and barely avoided having his governement destituted (by parliement) by the skin of his teeth. And you know what's worst? His austerity measures didn't even 'save public finances' because following each of them, he gave additional tax breaks to companies, which means our budget deficit is in a worse shape than it was in 2017.
Long story short, he's been playing stupid games for the last few years, and the stupid price is that Far Right is now the first party in France and nobody has a clue on how to get them down bar them completely failing at ruling.
(Of course it isn't just his fault that Far Right is on the rise, but he IS a pretty big cause)