Considering Russian is not only spoken in Russia but also in Kyrgyzstan, Kazakhstan, Belarus, Azerbaijan, Armenia, Estonia, Georgia, Latvia, Lithuania, Moldova, Tajikistan, Turkmenistan, Ukraine, and Uzbekistan, what would be the safest country to travel to where you can speak Russian? Probably not Russia or Ukraine because of the war but yeah.
Besides Tbilisi Georgia is nice, calm and pleasant. Kazakhstan is mostly a shithole, but if you’re not into interacting with people and enjoy flat steppes with endless views of nothing to the horizon, or beautiful mountains in the south, it’s a nice and calm place too.