External hard drive unrecognizable in disk utility but found in System Information
If several Macs and a Pi have all failed to read the disk, then I'd suggest it's not a software problem.
It's likely that the hard drive has failed in some way. WD drives are known to have poor enclosures, but getting the drive out of a portable drive shell is not easy.
You can try taking it to a data recovery firm, but it will be expensive. If you have a backup, just toss it. (This one, not the backup.)
Otherwise, you can try data recovery software yourself, but if the drive won't even be recognised, it's unlikely.