The most direct reason for the riots in France.

Ultimately, it is because there is no money....
Why is there no money? Because Macron implemented large-scale tax cuts.
That blue part represents French tax revenue. As Macron implemented tax cuts for the wealthy, tax revenue plummeted, leading to an expanded fiscal deficit.
However, when implementing tax cuts, one must also restructure expenditures to curb spending, but they haven't done so.
That is why there is no money.
The most representative example of failing to restructure expenditures is the French pension system.
If the median wage of the working class is set at 100, the pensions for retirees in France exceed 100.
In other words, the French pension structure is sucking the life out of the youth generation.