Cannot Reinstall XBox Game Bar

[Windows 11]

Very similar to another thread however none of the solutions worked. I used the command Get-AppxPackage Microsoft.XboxGamingOverlay | Remove-AppxPackage, trying to get a clean install,. I saw on another thread to use the command Get-AppXPackage *Microsoft.XboxGamingOverlay* -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}in powershell and it says access is denied, and in command prompt, it says "'Get-AppXPackage' is not recognized as an internal or external command,operable program or batch file."I do not know what to do now.

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