Keep in mind that Russia is made up of many different ethnic peoples which aren't necessarily similar in demographics or mindset. People in different regions have different past experiences and different concerns.

I'd use the U.S. as an example, but here the people of Nebraska are reasonably similar to the people in Alabama or Maine or Illinois. We aren't that historically and ethnically diverse. Russia is.

That said, you can probably find vast areas of Russia that fully support the Ukraine war and the Russian government. You can probably also find regions where the local population DOESN'T support the Ukraine war and is extremely leery of the Russian government. You will find mixed results depending on where you go. Western Russia will have a completely different viewpoint than the people in Southern Russia or far Eastern Russia. Different regions will have had quite different experiences, especially during the Soviet era.

To say that 'The Russian People Support the War' or 'They Oppose the War' is attempting to lump everyone into one big opinion basket together. It doesn't work that way.

My bet is that the majority of people living in the larger cities and towns in Western Russia support the Ukraine war. Those are also the easiest cities to access for interviewing Russians who speak English and getting their opinions. The further you get into Central Russia or Eastern Russia... the more likely you will find people being skeptical about joining a war against Europe, or people leery about trusting the Russian military. Those people may have been on the receiving end of persecutions during the Soviet era, or been victims of ethnic cleansing in the past... or may just feel non-obligated or more removed from the situation and don't want to be involved.