You can’t get rid of it, you can only hide it: Microsoft imposes controversial Windows Backup on users::Like it or not, the Windows Backup app installed in Windows 10 and Windows 11 is here to stay, with Microsoft calling it a "system component" that can't be
You can get the Windows 11 ISO and mount/image a drive with it using Rufus which will let you disable telemetry and build a local account into the image IIRC
Hell you can even make a “mobile” windows install and have windows on an external drive with Rufus