Batch processing of effects

Good morning. to all.
I want to apply the same series of 4 effects to a large number of sound files which are voice recordings of comments (voice modification).
Despite multiple searches on the internet, I have not found the solution to apply regarding version 3.5.1 of Audacity that I use under Mac OS.
Many thanks in advance to anyone who can help me.

Please see: Macros - Audacity Manual

And: Manage Macros | Audacity Support

Peter