Undo deleted WordPress site

[premier69]

Hey guys

So I was making this website for an organization and that fell apart, so I deleted the folder, the site in the htc folder.
The site was moved to the recycle bin so i hadn't had the chance to permanently delete it.

Later it turned out the deal was back on so i undid the deletion, moved the site folder back to the htc folder so everything was undone, yet the site won't work now. What's going on here? I never deleted the database so it should work now, shouldn't it?