The Google Home app was removed approximately three months ago from the App Store, and also this app is no longer available from the Play Market for some devices. It looks like Google accidentally restricted access to this app in the Ukrainian region together with the Russian region (which is under sanctions, but Ukraine is not).
We’re sorry to hear that the Home app is not available in Ukraine. Google Home and Google Nest speakers aren't officially sold or supported in Ukraine, hence the app isn't available in your country unfortunately.
We appreciate people who are keen on sharing their thoughts with us. We're always looking for ways to improve and we'll take this as feedback. Let me know if you have other questions or concerns, otherwise I’ll be locking this thread after 24 hours.