Can this be recovered? 2nd image is of the first non zero bytes of the partition. Btrfs was used.

Not enough info, but I'm guessing no. Looks like you started zeroing out the drive and cancelled realizing your mistake? If you had just deleted the partition, you could fix that with ease, but zeroing is pretty much a guaranteed no.

You can try and run some data recovery tools to find some specific files, but I'm pretty sure it's just wasted time.