I understand the passport/nationality thing completely, but I don't think you should knock it til you try it. Just because a site has high traffic, it doesn't mean that will be your highest earning site. I've been on a few sites with high hopes because of the high traffic, but there's also (usually) more competition that comes with it, and so in regards to clip sites especially, the ones with less traffic are the ones I was able to consistently make min payout every month with.
Chaturbate is a high traffic site. There's more viewers, and more competition pushing you further back the pages.
Putting your eggs in more than one basket will help establish which site works for you. It's not just a guy problem - camgirls can struggle on one site and succeed in another. If you really want to stream on chaturbate, then good luck, but please consider my point if it's not going as well as you'd hoped