Why did you not use the default Ren'Py translation tool? That would make it easier to switch between Russian and English. If you move the language selection to the splashscreen you also get the benefit the the main menu being translated on startup as well. Don't know why you have tl\None default as Russian as you can just have a Russian translation folder and you wouldn't have to code a lot of if eng lines. Same would work if you used Russian as default and had an English translation folder.
https://mega.nz/file/PeJgnYaI#THR0P7qjIPx5sYhelxMC8NIrWXSPKCPdbmUrhKJFeFw