Do you have proof that Russia and China are spreading disinformation within the US? Or do you simply believe what you hear from others, such as the US media and intelligence community?
Take the Russian election interference allegation for example. IP addresses can be spoofed, or traffic intentionally originated from Russian IP addresses while the user is in a different country. Consider that the “evidence” is little more than a text file (traffic logs) that isn’t made public.
Consider that media allegations of “interference” rarely (if ever?) include any examples of said interference.