The repository files I'm looking for are on external links recommended by Kodi users.
For example, the Netflix addon is at repository.netflix-1.0.1.zip
When I try to add this directory to the Kodi addons list it accepts it but when I try to connect the File Manager only shows my root but no files in the repository directory, even though it appears to have connected - and I can see them if I enter the link in my PC web browser.