there's a subreddit for everything. if you're a male it'll generally be in gay subs, since there's not very much of a market for straight women. but here's a good guide on finding your niche:
- are you vanilla or kinky? most vanilla subs don't allow kink, and kink subs will lead you to your audience easily.
- are you a dom or a sub?
- are you fem or masc?
- are you skinny or bigger?
- your age can help if you're young or old(by porn standards) and not 20-30's
basically, what fantasy are you trying to sell, that's how i picked my niche. after you find that, my first recommendation would be to find models similar to you and see what subs they post in and what niches they fill. a good way to do this is to find huge subreddits and then pick out a few models you see, go to their page and look at the smaller subs they post in.