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.
Would not recommend people to go to the Baltic states in order to use/practice their Russian though. Central Asia is probably the way to go for that purpose.