Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
I'm currently learning Russian, so I appreciate that information. Also a lot of Russian content is available on YouTube randomly. Also searching for Star Media will bring up a lot of Russian programming.
Alternately, Amazon Prime has been adding Russian TV and movies. I can recommend the show "Marseille". We liked it a lot.