Need help with dead WD20EARS-00MVWB0

WD Internal Drives Desktop & Mobile Drives
3

Looks clear to me the disk assembly itself is trashed. This make the disk unrecoverable.

I only use notebook disks as externals as they can live on USB power and are less likely to be killed

Better is to use a server if you have that much content. An old machine can act as a home server easy.