For those who think they know what Russian public opinion is, I offer this interesting article from the Moscow Times:
Of course, The Moscow Times is an anti-government news outlet that has been banned in Russia, so you can take their bias FWIW. However, no source is more biased than the Russian government itself. My point is that there is no effective means for measuring public opinion, so you sometimes have to look for alternative points of view. The easiest thing is to read a lot of news articles and then come away with some superficial impression based on the few sources your have been exposed to. Russia is a huge, complex country, and there is much more variety and diversity there than most outsiders are aware of. So these alternative pollsters have some interesting methods to apply to the problem, but they are necessarily limited in their sources of information. The most common estimate for Russian public opinion is that about 70% of the public is pro-war. These alternative pollsters claim that a more realistic estimate would be around 40% or even lower. The truth is probably in between those figures.