See every thinking brain is capable of ideating. That's the very human nature you are born with. But just because you have an idea, doesn't mean that its worth investing. If it is THAT good, then you would have sold your soul to fund the project yourself.

And there are tons of exchanges these days, some share rewards, some share revenue, etc etc So I doubt that you have come up with something that someone else hasn't already thought of.

But with that said. You should patent your idea before you start pitching it to potential investors, otherwise, anyone that you share your multimillion-dollar idea, they could steal it.