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Another redpilled space opera anime is Crest of the Stars & Banner of the Stars. They're based on novels by an author who was accused of being a fascist.
It's set in a future where humans have become corrupt and degenerate, and many of the human colonies are literally controlled by a communist government.
Then some conflict happens that triggers a war with technocratic fascist space elves, who then kick the degenerate humans' asses, despite being outnumbered.
The only downside is that the MC is basically a male feminist luggage lad for the space elf princess.