Uninstalled apps still appear in settings

I have deleted an app with intentions of reinstalling, but when I clicked App Store and searched for the app, instead of showing the option to download it's showing "open" as if I still have the app. I've turned my phone off and back on multiple times but it's still there. Can anyone help get my app back?

Try this

1. Back up your iPhone (use a password on the backup)
2. Wipe your iPhone: settings > General > Reset > Erase All content and Settings
3. Restore your iPhone from the backup you just created.

The ghost icons should be gone

This whole procedure should take less than an hour. Possibly much less depending on how much needs to be backed up and if your Mac & iPhone support USB3 speeds.