External hard drive damaged from setting up new imac

I just got a new 2021 iMac with m1 chip and I used my time machine backups from my WD passport external hardrive to set it up. Once the transfer of everything was finished I went to eject my drive and it disappeared. It won’t show up anywhere on the Mac not even disc utility or after a restart. I checked and show external drive is checked in preferences. I tried plugging it into my MacBook Pro and it’s greyed out in disc utility unable to mount and first aid failed.

The drive was completely fine before I used it on the new Mac. Any ideas what happened or how to fix it would be greatly appreciated!

* both computers I had it plugged into were running on BigSur