Since everyone else is missing this crucial detail of the OP, streaming of NSFW games is basically not a thing, certainly not on Twitch. You can get away with more on YouTube, but not a lot of people are willing to, because they like keeping their videos monetized.
There really is no infrastructure for supporting NSFW games, you're going to be fighting an uphill battle. If you're making these kinds of games, you either will need to shamelessly trend chase and pump out slop, or do it for the love of the game regardless of whether an audience ever materializes.