I bet Anne knew many powerful people from France and was liked by the French people. So my question is, why didn’t anyone from France act to save Anne from being executed?

Anne's downfall was incredibly fast so nobody would have had chance to do anything about it even if they could have. Nobody would have been prepared to act against the King of England anyway, it was not their place to and France would have obviously wanted to keep on good terms with England. Etienne Dolet, friend of Nicholas Bourbon, did write a sympathetic epitaph on Anne Boleyn who he said was "falsò adulterii crimine damnatoe, et capite mulctatoe Epitaphum", i.e. falsely charged with adultery and beheaded.