There is another translation for Angel's mods that contains Russian translations. For reference:
https://mods.factorio.com/mod/angelsaddons-newlocales
The translations there are done via crowdin:
https://crowdin.com/project/angelsaddons-newlocales
and are listed as 100% complete [edit] for Russian [/edit].

Unfortunately, the owner of the other mod is not keeping up with incorporating the incoming changes of source files from Angel's mods, so the locale translations are not really 100% complete.

I translate mostly for myself.
You can use newlocales, but I didn't see him.

And there's really not 100%

It's fine if you mainly translate for yourself. I just wanted to make other people aware of additional alternatives.
[edit] This is particularly interesting when one of the two alternatives does not get updated for some time. [/edit]

And yes, I know and wrote so already: it is not really 100% for Russian. I don't play in Russian, but in German and use newlocales (and help with the translations). And we have the same issue: on Crowdin everything is translated, but Angel's Mods have changed in the mean time – while newlocales was not updated. Not all translations that are in Crowdin made it into the published mod yet, and not all recent changes to Angel's made it into Crowdin to be translated. So yeah, it is possibly around 60% or 80% right now.

I'll mark the alternative in the description.
and change the title of your topic to russian.

thx