I think it'll be tough to find that corner of it... I think I saw a conservative community on lemmy.world but the platforms original purpose was to get away from the big, controlling, capitalist social media platforms the likes of Twitter, Instagram, reddit, etc. Like mastodon, the largest part of the fediverse (I'm pretty sure), grew alot when twitter was brought by Elon, and more moved after he messed up the platform enough, saying they'll create their own platform where hate won't be allowed. It's kinda against it's nature to have much conservative-ness.
Not trying to be rude as based on how this sounds, you seem nice enough and not crazy, but places like mastodon are basically the left's version of "Truth social" where people are pretty ok with saying "I don't want those thoughts spread here" those thoughts they don't want are usually things like homophobia or transphobia, but those are fairly common on the right even if you don't share them.
It's an interesting thought and would probably be alittle healthier, but hey you're still here being able to provide that counter point of view