Charles DeGaulle had no time for Anglo-Saxon predominance. Inspired by stories about centuries of French glory, he had no intention of letting the Americans, British, and Germans push him around. As a result, he pulled France out of NATO and built up a French nuclear arsenal. France would be a major player on the world stage on its own.
Except it wasn’t. It was just too small. DeGaulle’s successors consequently pursued a different approach–building up the EU, which would prosper and turn into a superpower under French leadership. It was a more pragmatic and realistic version of Gaullism.
The current battle between the center and the right is essentially a struggle between these visions of Gaullism. Macron wants to make the EU great again; LePen has little use for the EU and wants France to be more of an independent actor on the world stage. Could a France under RN leadership actually stand up to the US, China, and Russia? I doubt it.