So the general impression is "bad but less bad than possible" for the Euro election.
In France, while Le Pen party is leading, it actually did a little less in % than last time. And if the UK leaves the EU and their seats are indeed redistributed as planned, Macron's party will field as many MEP as them.
The whole Yellow Vest movement didn't really have any apparent and dramatic effect. The Yellow Alliance which was the only list explicitly catering to it, led by C-list singer and notorious goofball Francis Lalanne, only managed 0,6% of the vote.
The Greens once again do very well in Euros (16% in 2009 IIRC) but in the past it never really transferred well to domestic elections. But with the neverending agony of the Socialists, it's possible that they might have a chance at filling the vacuum at the prominent moderate left party.
It's hard to know what to make of Macron's list results. For a party with only a couple of years of existence under its belt, and within the pretty belligerent national mood of last 6 months... It's not exactly a defeat. His base has not eroded and he's by a wide margin the strongest "respectable" / non far right candidate.
The left really need to sort out a coalition of sorts (Green + Socialists + Hamon + Communists could work, they managed it in the past) because it's a consistent 20-25% bloc (30+% with FI) that get squandered away each time now.