In the aftermath of a German victory in the First World War, the political landscape of Europe would have been drastically altered.

With the collapse of the French Third Republic, a power vacuum would have emerged, potentially allowing for the rise of radical leftist movements.

While the specifics are difficult to predict, it is plausible that France may have embraced communism in this alternate timeline.

The devastation of the war and the perceived failure of the democratic system could have fueled widespread discontent among the French populace, making them receptive to the promise of a socialist revolution. - https://germanyfocusguide.com/blog/would-france-embrace-communism-if-germany-won-wwi/?unique_id_mt6gmu25

"Alternate History Exploration: Would a German Victory in WWI Have Led France to Communism?"