Recover files on my book (2TB) after setting from raid 1 to raid 0

Help!
We have a NAS from WD (dual disk - 2 TB) MyBook (I do not know the exact name of the disk)
Somehow this disk did not run well (kept repeating to try to write in Raid 1), so my son said he would fix this.
He took the disk out of the network and changed the Raid status from 1 to 0.

Now we do not see any data (obviously)
Is there a way to recover files on my book (2TB) after setting from raid 1 to raid 0?

Hello,

Sorry to hear that.

Have you tried using a data recovery software? Check online to see if you can get a data recovery software that works with a network unit.