There was never an Apple Silicon native version of Flash as far as I am aware. If you can find a 64-bit x86 MacOS NPAPI plugin for flash then you might be able to use that in conjunction with the 64-bit x86 version of Pale Moon in Rosetta 2.
If you have Crossover or Whisky you might be able to run the Windows version of the browser and the Windows NPAPI plugin. I did this years ago on Linux with Wine but it was a long time ago. I haven’t tested recently to verify if this still works.
If you have Crossover or Whisky you might be able to run the Windows version of the browser and the Windows NPAPI plugin. I did this years ago on Linux with Wine but it was a long time ago. I haven’t tested recently to verify if this still works.