my partitions are lost and my datas are also lost when I use ntfsfix on my hard drive. For the partition table like this:

sdb        disk 
  └─sdb1     unallocated
  └─sdb5     /DATA1
  └─sdb6     /DATA2

Instead of using ntfsfix on /dev/sdb5 or /dev/sdb6, my brain told me to try using it on /dev/sdb, and as a result all my partitions were lost and my data was lost.

Is there a way to restore it?, I've tried using testdisk it doesn't work, or maybe I'm using testdisk wrong.