Hi there tana247,
To confirm, does this only happen when using the Instagram app or have you noticed it happening with other apps as well?
If that is correct, please follow the steps below, as those may help resolve any unexpected issues being encountered:
1. Close and reopen the app
Force the app to close. Then open the app to see if it works as expected.
2. Restart your device
Restart your iPhone or restart your iPad. Then open the app to see if it works as expected.
3. Check for updates
To see if updates are available for the app, open the App Store, tap your profile icon, then scroll down to see if updates are available. If updates aren't available for the app, update the software on your iPhone or iPad.
4. Delete the app, then redownload it
Delete the app. When you do this, you might lose data that was stored in the app. Then redownload the app. Then check to see if the problem with the app is fixed.
Those steps are from this article: If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open The name may not reflect what you're encountering, but the steps above are still relevant.
Let us know how those steps go or if you've already tried those steps.
Take care.