Enzo Traverso wrote on the topic, let me give you the basic idea.
Rightist French historians snuck in the idea that Robespierre = Stalin to defamate communism. The kind of people who strangely did not condemn Vichy France, yknow.
So in the end there are "good" and "bad" revolutions. Usa 1776 good cause muh freedemz, Russia 1917 bad because gulag. And the French rev sits 50-50 there.