External USB Hard Drive overwritten by umbrelOS

[tgntr]

Hello, I have a Raspberry Pi 5 with umbrelOS installed on a microSD. After I had access to umbrel.local I inserted my external usb drive to load media in Plex and after using the Restart button in Settings, the restart took longer than expected and for some reason the OS was installed on the external drive. After loading umbrel.local asked me to create a user again. Now when I load the usb drive on my PC i no longer can access it and see my data. Using some 3rd party tools I managed to see that currently the main partition is named umbrel, however with recovery methods I am still able to see my media files. My question here is if anyone is familiar with this issue and can share any advice on the best way to recover the data? Thanks!