Why can’t I delete apps off my iPad

Here's some reading on this subject:

How to delete [third party] apps on your iPhone, iPad, and iPod touch - https://support.apple.com/HT207618 and tips at: https://discussions.apple.com/thread/8291123

Delete built-in Apple apps from the Home screen on your iOS 14 or iPadOS device or Apple Watch - https://support.apple.com/en-us/HT211833

If you cannot delete an iOS app:

Go to Settings->Screen Time ->Content & Privacy Restrictions -> iTunes & App store purchases -> Deleting Apps, and make sure its set to allow

If these are built-in apps, there are limitations:

Delete built-in Apple apps from the Home screen on your iOS 14 or iPadOS device or Apple Watch - Apple Support

If the iPhone as screen time restrictions enabled, or if profile(s) are loaded to prevent app deletion, discuss this with the folks that set the screen time restrictions, or that loaded the profile(s).

If these are other apps and there are no screen time and no profile restrictions, you’re probably headed for a backup, reset, and reload.