The formal words for Mr and Ms are gospodin (господин) and gospozha (госпожа). However, in Soviet Russia, these forms were seen as antiquated. Both men and women were addressed as tovarishch (товарищ) surname. In English - comrade [surname].
Gospodin and gospozha have fallen out of use except for very formal correspondence. A polite form of address is still the first name and patronymic - so a boss, coworker, or neighbour would address your characters as
Anna Sergeievna and so forth. Or comrade Orlova.
masculine list:
https://www.behindthename.com/pnl/191050/124079feminine list:
https://www.behindthename.com/pnl/191050/124080This message was edited 9/24/2023, 2:45 PM