My email is everywhere so shouldn’t be hard to find on some random list in the clearnet. 

But sometimes if you’re email got leak by a random company once, it is easy for phishers to buy the info in the darkweb 

I’ve my email since the dawn of time so it has been leak a bunch. 

As far as yours goes… good question. Try https://haveibeenpwned.com and see if it got leaked. If it did I’m assure you has been compromised forever