APFS Partitions corrupted

I recently ran Boot Camp Assistant to remove the Windows partition from my 2017 MacBook Pro, but during the partitioning step I quit Boot Camp Assistant. After restarting the computer the next time, I got a flashing drive icon and macOS was no longer booting. My only option at this point was Internet recovery. I tried running Disk Utility, unfortunately First Aid seems to be unable to fix the problem: Looks like the APFS Container got corrupted. **diskutil apfs list**

Containers (2 found)
|
+-- Container ERROR -69808
|   ======================
|   APFS Container Reference:     disk1
|   Size (Capacity Ceiling):      ERROR -69620
|   Capacity In Use By Volumes:   ERROR -69620
|   Capacity Not Allocated:       ERROR -69620
|   |
|   +- No Volumes

Next, I tried diskutil repairVolume on the APFS Volume, but again, no luck:

diskutil repairVolume disk0s2
Started file system repair on disk0s2
Repairing storage system
Performing fsck_apfs -y -x /dev/disk0s2
warning: nx_block_count is 122061322, while device block count is 110107642
error: object (oid 0x1): o_cksum (0x50eca9de0b97f54e) is invalid for object
Checking the container superblock
Storage system check exit code is 8
Error: -69716: Storage system verify or repair failed
Underlying error: 8

**GPT partitions:**

-r show /dev/disk0  
Password:
      start       size  index  contents
          0          1         PMBR
          1          1         Pri GPT header
          2          4         Pri GPT table
          6      76800      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
      76806  110107642      2  GPT part - 7C3457EF-0000-11AA-AA11-00306543ECAC
  110184448   11953680         
  122138128          4         Sec GPT table
  122138132          1         Sec GPT header

Also, recovery tools like iBoysoft do see the APFS volumes and all the files after I provide the encryption password, so the volumes seems to be OK: Is there any way I can re-build the partitions/APFS container so the disk will boot again? Any help would be much appreciated. Thanks! Note: currently I am running a fresh install of Catalina on an external HDD.