In the months after the war started Russia arrested nearly 15,000 protestors. Many of them have been tortured by police after the arrests. We have video proof of that. Still after mobilization 2000 more were arrested. All of that after years of beating down on civil society. The problem with protests is that so far you only end up suffering badly for it. So the risk is just not worth it.

So what happened then was that over a million Russians left the country directly after the invasion started and more after conscription was announced. Pretty sure they did not feel like dieing for Putin.

You also have a massive chain smoking problem in Russia. Some of the targets do not seem to be very interesting to Ukraine, but very interesting for Russian anti war groups. One of them is the recent fire in the Wildberries warehouse near St Petersburg.