If, as
@Kinetic points out, he was following the guidelines for his job and didn't make any personal wrongdoing? Then he is absolutely safe, as he should be. The jurisprudence is pretty clear on this, with the
Conseil d'Etat's judgements Tomaso Greco (1905), though if he clearly went out of his way to fuck up, then he'll be sued and probably fired as well (Anguet, 1911), and the damage wasn't caused by the police officer's use of a weapon (Consorts Lecomte, 1949). Macron knows these precedents way, way, waaaaaaaaaaaaaaaaaaaay better than I'd ever do, and he isn't Sarkozy, AKA someone who'll try to make public examples even though he doesn't have the tools for it or the legality on his side.
If it is indeed a fuck-up due to the guidelines and rules of engagement of the police force, then the administration itself is to blame, not the officer. Screwing up in front of the president himself is pretty much irrelevant for you as an individual (and is moreso the lower you are on the hierarchy's scale) as long as the screw-up comes from the rules and regulations. If the fault can be
detached from your
service, then you're fucked. TLDR, the only administrative job that are subject to the arbitrary of the government are the highest ones, for which there is no parachute or safety net, like the
préfet de Paris who got outmaneuvered a second time by the Yellow Jackets and got fired overnight for it: Darth Vader strangles admirals but do not randomly execute stormtroopers who got fucked by their orders or their protocol.