I'm sure when Russia's invasion of Ukraine took everything into account, and maybe this is as a test to Europe and the USA whether they will react, if the reaction is as normal as it is now then I'm sure Russia is considering its next target country.
In my opinion, the reason Russia is not using its full power against Russia is because Russia is aware that they are fighting against their brothers, so until now Russia has not used fighter jets to attack Ukraine, actually Russia only wants to fight America's allies who want to make Ukraine a scapegoat. If they really want to use their full power, it is certain that Ukraine is powerless.