I would really love a more globalized development for misskey, but it is easier said than done. Majority of bug reports, release notes and even some comments are written in Japanese (yk kana/Kanji). It would take a lot more than translating the documentation. It is hard to even report a bug (without worrying if there is a bug report already present in Japanese) let alone fix one.
Organic map is on f droid
https://f-droid.org/en/packages/app.organicmaps/