That's incorrect. When you ask question: "Do you support the war or do you want to get 8 years?" most people will answer accordingly.

More detailed surveys that measure the level of support for the war effort result in the numbers that I quoted. Researchers asked questions like: "Do you think the state should prioritize social spending or the war spending?" and "Do you think that Russia should enter peace talks?"

Here's the link: https://www.chronicles.report/ - you'll need to use machine translation.

Edit: in particular, 40% of the respondents say that they support the army withdrawal "without achieving the special military operation's goals".