What Are The Chances Of My Work Being Stolen?

So I've been recently writing my web novel, I'm a few chapters in and I want to receive feedback without posting it on the platform. One of my biggest fears is that if I do share my work while it isn't posted, it would be stolen by those who read it.

While the odds are incredibly low, deep inside I still believe there's still a chance albeit small of it being copied word for word and posted under their name.