I’ve seen many threads suggesting products but they often don’t mention FOSS projects, which should always be preferred to corporate software. With FOSS you are already boycotting capitalism, on either side. Free and Open Source ignores borders and shouldn’t be categorized in nationalist terms, no matter where some of the maintainers happen to live.
@EySkibidiBabBab Element? That’s just one of the apps, and frankly, not the best one. You are looking for Matrix. For android I’d recommend FluffyChat, for desktop/web Cinny. For iOS I’d recommend throwing it to a lake.