I wouldn't do what that video shows. I'd follow the first few minutes of the video and install downloader, and then install Kodi. After that, I'd only add the addons you want through repositories.
https://seo-michael.co.uk/how-to-install-the-covenant-kodi-krypton/
You can google how to install "......." on kodi and it will provide step by step instructions.
Right now covenant and smoothstreams are the only two I use.
Should I do that vpn blocker deal while running those? Sorry. Very green to this