macos - Recovering data from a lost/deleted HFS partition in Mac OS X

I have a 2TB hard drive with 2 partitions. It got partition by a program into 5gb accidentally.

I tried using Disk Drill Pro to recover the lost partitions and it could see it but could not rebuild because of the existing 5GB. So, I deleted the 5GB partition with disk utility tried again with Disk Drill Pro and I could not see the lost partition to rebuild.

I used TestDisk earlier to get the maps of each partition. I used pdisk’s terminal and partitioned it to the maps provided by TestDisk. Now the first partition 1.8gb, won’t mount on disk utility!

What should I do? Are my files gone? Should I repair the catalog file with Disk Utility?

Here are the disk details
With the 5GB;

Partition map ( 2048 byte block ) on /dev/
#:                    type name           length   base       ( size )
1:     Apple_partition_map Apple              15 @ 1
2:               Apple_HFS disk image    2637456 @ 16         (  5.0G)
3:              Apple_Free                     3 @ 2637472
Device block size=2048, Number of Blocks=2637475  ( 5.0G)
Device Type=0x0 DeviceId=0x0

After I deleted the 5GB using Disk Utility:

Partition map ( 512 byte block ) on /dev/rdisk2/
#:                    type name           length   base       ( size )
1:     Apple_partition_map Apple              63 @ 1
2:               Apple_Free.          3906363456 @ 64         (  1.8T)
Device block size=512, Number of Blocks=3906963456 (1.8T)
Device Type=0x0 DeviceId=0x0

After changing the map to TestDisk’s using pdisk

Partition map ( 512 byte block ) on /dev/rdisk2/
#:                    type name           length   base        ( size )
1:     Apple_partition_map Apple              63 @ 1
2:              Apple_Free Extra             448 @ 64
3:               Apple_HFS My         3882374848 @ 512         (  1.8T)
4:              Apple_Free              24588096 @ 3882375360  ( 11.7G)
Device block size=512, Number of Blocks=3906963456  (1.8T)
Device Type=0x0 DeviceId=0x0