FAULTED zpool not importing old tgx

[numerfolt]

Hi there,
I did a big oopsie by not adding noresume to my kernel commandline after editing my pool with zfsbootmenu. My system happily tried to resume from a bad state and now my pool is broken, yay!

Now when using zpool import I'm stuck with this:

pool: zalpollo
id: 17955349929807995644
state: FAULTED
status: The pool was last accessed by another system.
action: The pool cannot be imported due to damaged devices or data.
        The pool may be active on another system, but can be imported using
        the '-f' flag.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-EY
config:

        zalpollo                                         FAULTED  corrupted data
          mirror-0                                       DEGRADED
            nvme-WD_Blue_SN580_2TB_24322S803071-part3    UNAVAIL  invalid label
            nvme-WD_BLACK_SN770M_2TB_234838802686-part3  ONLINE

(Please disregard the invalid label, that's because I tried looooots of things already...)

I read through ~50-60 forum posts, bug reports, discussions, ... and the best shot I currently have is rolling back to a previous tgx: zpool import -f -o readonly=on -T 5021061 -m
results in

pool: zalpollo
id: 17955349929807995644
state: DEGRADED
status: The pool was last accessed by another system.
action: The pool can be imported despite missing or damaged devices.  The
        fault tolerance of the pool may be compromised if imported.
   see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-EY
config:

        zalpollo                                         DEGRADED
          mirror-0                                       DEGRADED
            nvme-WD_Blue_SN580_2TB_24322S803071-part3    UNAVAIL  invalid label
            nvme-WD_BLACK_SN770M_2TB_234838802686-part3  ONLINE
          indirect-1                                     ONLINE

(Which would be ONLINE instead of degraded if the labels were still valid)

But the problem is, even though the pool seems to be importable, it is not getting imported by zpool import, zpool status shows no pools available.

What could I try?

I have backups of my most important files, but didn't backup things that I deemed not that important. Only to find out, that they would've been quite important indeed.
Therefore I would love to even just import the pool as read only, to copy 1-2 files to an external device.

I know about this issue, but there is no solution available afaik?

(Thanks for the thumbs down, really helpful! 😅)