Android 5 flip phone(12-key) keyboard that supports other languages? Not TT9

So, I switched to Kyocera Gratina 4G KYF31. But there are only 2 languages: English and Japanese, witch is sweet, but I also need russian. I was able to download and use gboard, but it's clanky because I'm using it on the screen through touchpad.

So. Does anyone know a keyboard that will support more languages, while also being button operated?