A manifest v3 web extension with minimal permissions that automatically redirects popular sites to privacy friendly frontends - GitHub - libreom/predirect: A manifest v3 web extension with minimal ...
It supports both links and embeds and is available on firefox for android. List of sites is on github. I'm the main developer so you can ask questions.
Libredirect is a manifest v2 extension (can't be published on chrome store) and has permissions for all_urls, predirect is a manifest v3 extension and only has permissions for necessary domains