Also available on F-Droid, which is based in Germany (but I don’t think those releases are managed by the Joplin devs directly)
Or you can download the apks directly from GitHub and sideload them to your phone. Those use the same apk signatures as the ones from the Play store. If you switch to the F-Droid version, you will need to uninstall and re-install Joplin (and therefore sync all your data again), because they use a different signature