yt-dlp run from the terminal. need to have ffmpeg as well. use homebrew for both. 

 https://freetubeapp.io/ 

 Do you need help installing Linux? 

 Maybe the "Video DownloadHelper" Firefox add-on will work on Macs.

¯\_ (ツ) _/¯ 

See this post:

https://primal.net/e/note1zwalgl3pt0duu9f6eg33dcgu67je30uzye7lzgslnka5dlfjtpfsgfc2w4 

 Oops, wrong one.

Try this post

https://primal.net/e/note1yuqssvzfvp308shzdylz9prvn03z2gg62q0n4at8sakpkwf9gc2qe9d7wz