Ok, I had to redo the process, since I partitioned my hard drive back, and I got this:
Started APFS operation
Aligning shrink delta to 41,123,069,952 bytes and targeting a new physical store size of 80,000,000,000 bytes
Determined the minimum size for the targeted physical store of this APFS Container to be 76,063,088,640 bytes
Resizing APFS Container designated by APFS Container Reference disk1
The specific APFS Physical Store being resized is disk0s2
Verifying storage system
Using live mode
Performing fsck_apfs -n -x -l /dev/disk0s2
Checking volume
Checking the container superblock
Checking the EFI jumpstart record
Checking the space manager
Checking the object map
Checking the APFS volume superblock
Checking the object map
Checking the fsroot tree
Checking the snapshot metadata tree
Checking the extent ref tree
Checking the snapshots
Checking the APFS volume superblock
Checking the object map
Checking the fsroot tree
Checking the snapshot metadata tree
Checking the extent ref tree
Checking the snapshots
Checking the APFS volume superblock
Checking the object map
Checking the fsroot tree
Checking the snapshot metadata tree
Checking the extent ref tree
Checking the snapshots
Checking the APFS volume superblock
Checking the object map
Checking the fsroot tree
Checking the snapshot metadata tree
Checking the extent ref tree
Checking the snapshots
Verifying allocated space
warning: Overallocation Detected on Main device: (19608111+1) bitmap address (6e77)
The volume /dev/disk0s2 appears to be OK
Storage system check exit code is 0
Shrinking APFS Physical Store disk0s2 from 121,123,069,952 to 80,000,000,000 bytes
Shrinking APFS data structures
APFS Container Resize error code is 49187
Error: -69606: A problem occurred while resizing APFS Container structures
