as far as I am aware.

The reason you aren’t aware of dissent is that Zelenskyy banned rival parties, took control of media outlets, and passed a law that makes opposing the war or supporting any territorial concessions imprisonable offense, which has been used against political activists.

To be clear, Russia does the same things. The point isn’t to support the Russian or Ukrainian government, only that the US’s actions are opposed to the interests of the Ukrainian people.