Apps that don’t work:

• Google Pay

As far that I know, that’s it.

There’s NewPipe, which is open-source.

Why not Element/Matrix?

Try https://simplex.chat. Better privacy and no phone number required.

Most cryptocurrency communities use Discord or Telegram. It’s such an embarrasment.

You can just continue using Signal. All the alternatives will disappear from the app stores too unless they spy on you.

A recent alternative with even better privacy is SimpleX: https://simplex.chat/

If you need a Chromium derivative, then Brave is probably the best choice. It’s open-source, and includes ad blocking. Just don’t use its crypto token.

I prefer Firefox over Brave, but sometimes I might need a Chromium derivative for a particular site.

Ferdium does this and it’s open-source. It supports Lemmy too. And you can even add your custom website.