Hi Emily Davis,
Using PowerShell is the most reliable way to remove applications when the Settings menu is restricted. You can identify packages with Get-AppxPackage and attempt to remove them using Remove-AppxPackage. However, be aware that receiving an error like 0x80073CFA means the app is a protected system component essential for Windows integrity and these should not be forced off the device, as doing so can destabilize the operating system. If an app can't be removed, it is best to leave it in place to ensure shell functionality remains intact.
Hope this answer has brought you some useful information.
Domic V.