Hey there, and welcome to Apple Support Communities Barbonandren,
We can certainly understand your concern and can help provide some insight.
Since the App Store is showing an open status instead of download, this will then mean the app might be still installed on the device. That being said, we recommend checking out these steps for more information on how to locate your applications on your device.
" Find your apps in App Library on iPhone
App Library shows your apps organized into categories, such as Creativity, Social, and Entertainment. The apps you use most are near the top of the screen and at the top level of their categories, so you can easily locate and open them.
Note: The apps in App Library are organized in categories intelligently, based on how you use your apps. You can add apps in App Library to the Home Screen, but you can’t move them to another category in App Library.
Find and open an app in App Library
- Go to the Home Screen, then swipe left past all your Home Screen pages to get to App Library.
- Tap the search field at the top of the screen, then enter the name of the app you’re looking for. Or scroll up and down to browse the alphabetical list.
- To open an app, tap it.
If a category has a few small app icons, you can tap them to expand the category and see all the apps in it."
For additional information, check out this link: Find your apps in App Library on iPhone - Apple Support
These steps will help ensure your device is working with ease and can fix common issues like the ones you’re experiencing.
Kindest regards!