Damus also has choices but for the purple subscribers still the best expierence but I doubt that people from Brazil will pay for it

Don't fix it. Amethyst's translation engine is much worse than Google Translate, it makes a lot of mistakes and in many cases confuses Portuguese with Galician, making the translation even worse or translating even when it is already in the native language.

Many don't realize it, but there are language bubbles on Nostr due to the difficulty or lack of translation.