Usually its best to go outside but for me atleast, when i couldnt find anything, i js hopped on google and searched for local buisnesses that shut down, that way i actually discovered alot of spots. If that doesnt work you could try this website here: Urbexology.com its a map of every abandoned loc around the world, but if you live in a small area you most likely wont find anything. If you have other friends that urbex you could ask them too.