Do you have any money?
Illustration is hard work, as you suggest. People don't do hard work for free. When's the last time you took what you do and gave it away for free?
You can find an illustrator by sharing the concept of your work with them and selling them on its merits. And then, most important, stop saying "illustrate it FOR ME". It's not about you now. It's a joint project that the illustrator now partially owns. Indeed, they largely own it, because without them it doesn't exist.
Ideas aren't worth much - execution matters. And if you can't execute it solo, you can't own it solo, simple as that.