This is anecdata. I know many Russians and zero of them approve of the current war. This includes the Russians living in Donetsk who had a lot of anger towards the Ukraininan government previously.
If you go on Russian social media sites, there's an interesting phenomenon of many of them obviously disliking Putin while buying his propaganda wholesale about the West and Ukraine's Nazi government
While I won't argue that many Russians are indeed nationalistic and pro-Putin, that thread shows the opposite. All anti-war comments are upvoted, anti-west downvoted. Some comments are sarcasm/irony, maybe it was lost in translation.