I think this graph may go some way to explaining how Macron can be both a liberal while trying to implement some economic policies that are seen as right wing in France.
Again, applying the U.S. sense of the word 'liberal' to other countries. Most liberals in Europe are right-wing on economics.
I'll take you at your word on that, but the Liberal Party in the U.K was the centrist/left leaning party. John Maynard Keynes was a member of the Liberal Party for his entire adult life.
The U.K. is an exception to that. Most other liberals are right-wingers on economics.