Missing App from Homescreen

I’ve mistakenly deleted some apps from my homescreen. They are open but I cannot get them to show up on my homescreen? Any suggestions?

Welcome to Apple Support Communities.

If you moved it to the App Library, go to the App Library, and long press on the App's icon. You can then move it back to the Home Screen. Organize the Home Screen and App Library on your iPhone - Apple Support

If you deleted the App, go to the App Store, search for the App, and re-download it. Download apps and games on your iPhone or iPad - Apple Support

-Jack