Hey there Congelious,
It sounds like you are having a problem with an app you got from the app store. I would use the following article to help troubleshoot that named:
iOS: An app you installed unexpectedly quits, stops responding, or won’t open
Start with these steps to get you started:
Follow the steps below and test the app after each step.
Restart the app
Close the app and open it again.
Restart your device
Update your device software and your apps
Update your device to the latest version of iOS.
Update your apps:
- Open the App Store and tap Updates.
- If updates are available, tap Update All.
- If asked, enter your Apple ID password. The updates will download and install.
You might need a Wi-Fi connection to update some apps.
Install another app from the App Store
If your installed app won't open, download and install a free app that isn't on your iOS device. This should reset your Apple ID authorization.
Remember to use the same Apple ID that you used to download the app that you're having issues with.
There are additional steps if you need them in the article.
Thank you for using Apple Support Communities.
All the best,