As a Pole by birth, I'm undoubtedly biased. However, it's not as simple as "Putin wants war, despite opposition from most Russians." Living near the USSR border and within the Soviet sphere of influence taught me that a vast majority of Russians prioritize a strong, assertive nation, often placing societal and economic development lower on their list of needs. If that means occasional invasions and killings, it's part of the game.
Putin may achieve 80%+ support through rigged elections, but even without rigging, it's likely 60%+. So, it's not a simple dichotomy of the Russian people versus Putin - it's more complex.
That said, I also have Russian friends (many now former Russians) who passionately hate the current government and condemn its actions.