Hidden app not in "Hidden" folder so I can't unhide it

A while back I decided to hide one of the apps on my iPhone. I recently decided I wanted to un-hide it and saw that the app should appear in the "Hidden" folder on the app library page. Unfortunately, after I unlock the folder with Face ID, it appears blank. I have scrolled through all the pages of my Home Screen several times and the app is not showing up, but I can access it by searching for it. Any idea how I can bring it back to my home screen?