As it turns out, they do not. We used to think they had huge numbers of tanks, but it turns out that the tanks they had in storage are non-functional. They are almost out of tanks. Right now, the Chinese could invade Serbia, and not run across a single Russian tank. They were forced to steal Indian tanks that were being refurbished. The Victory Day Parade which usually has hundreds of tanks had only one tank.
The Russians have surrendered Ukrainian air space to the Ukrainians. They are scared to death to send their planes over Ukraine. This is nothing to be proud of.
In the last year, Russia has advanced 50 square miles, and Ukraine has advanced 3,000 square miles. Ukraine is about to get western tanks, and then things will get worse for Russia.