You don't need to replace Twitter. It doesn't need to exist in the first place. Just stop using it. Replace using Twitter with not using Twitter.
Maybe this isn't the way most people are using Twitter though, I would agree that being off the platform entirely would be better than just letting their algos serve up content to you and becoming addicted to the dopamine rush of likes and retweets.
No, I think almost everyone on Twitter is there to consume stuff that conforms with their worldview/politics, same as you.