80 gb missing "free space" after deleting bootcamp - resizing container leads to error 69716

Question

(Update to the previously closed question: this is a frequent issue. In a previous post, I was linked to a similar question which suggested to resize the container. However, this does not address the issue in my case. Resizing leads to error with associated dstream id objects)

I deleted Bootcamp but an error occurred that the free space could not be restored to the existing partition. Now I am stuck with 80 GB of "free space" which I cannot add to my standard partition. I have tried repairing with disk utility - no action taken - as well as removing the "free space" - but errors occur.

Here is a screenshot of my diskutil list.

Nilss-MBP:~ nils$ diskutil list
/dev/disk0 (internal, physical):
       #:                       TYPE NAME                    SIZE       IDENTIFIER
       0:      GUID_partition_scheme                        *500.3 GB   disk0
       1:                        EFI ⁨EFI⁩                     314.6 MB   disk0s1
       2:                 Apple_APFS ⁨Container disk1⁩         418.0 GB   disk0s2
                        (free space)                         82.0 GB    -
/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +418.0 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume ⁨Macintosh HD - Daten⁩    339.1 GB   disk1s1
   2:                APFS Volume ⁨Preboot⁩                 471.6 MB   disk1s2
   3:                APFS Volume ⁨Recovery⁩                1.1 GB     disk1s3
   4:                APFS Volume ⁨Macintosh HD⁩            15.4 GB    disk1s4
   5:              APFS Snapshot ⁨com.apple.os.update-...⁩ 15.4 GB    disk1s4s1
   6:                APFS Volume ⁨VM⁩                      1.1 GB     disk1s5

Here is part of the output when trying to resize the container, indicating what seems to go awry in my case:

Nilss-MBP:~ nils$ sudo diskutil apfs resizecontainer disk0s2 0
Checking snapshot 1 of 2 (com.apple.TimeMachine.2022-08-03-114336.local) error: dstream (id 3281843) does not have an associated dstream id object

warning: snapshot fsroot / file key rolling / doc-id tree corruptions are not repaired; they'll go away once the snapshot is deleted

error: alloced_size (86016) of dstream (id 3281843) does not match calculated size (0)

error: dstream (id 3286987) does not have an associated dstream id object

error: alloced_size (16384) of dstream (id 3286987) does not match calculated size (0)

error: dstream (id 14693189) does not have an associated dstream id object

error: alloced_size (1884160) of dstream (id 14693189) does not match calculated size (0)

error: dstream (id 14910577) does not have an associated dstream id object

error: alloced_size (1110016) of dstream (id 14910577) does not match calculated size (0)

Checking snapshot 2 of 2 (com.apple.TimeMachine.2022-08-03-124315.local)

error: dstream (id 3281843) does not have an associated dstream id object

(// similar errors as with snapshot 1)

Checking the document ID tree

Checking the fsroot tree

error: refcnt (1) of dstream id object (id 3281843) is less than expected (2)

error: dstream (id 3286987) does not have an associated dstream id object

(// more, similar errors as with snapshots 1 and 2)

Checking the extent ref tree

Verifying volume object map space

The volume /dev/rdisk1s1 was found to be corrupt and needs to be repaired

Performing deferred repairs

error: refcnt of dstream id object (id 3281843) less than expected

error: dstream (id 3286987) does not have an associated dstream id object

Skipped 6/6 repairs of this type in total

Deferred repairs skipped

The container /dev/disk0s2 could not be verified completely

Storage system check exit code is 8

Error: -69716: Storage system verify or repair failed