2017 Intel iMac - MacOS Installation Fails

I’ve tried recovery, with ventura, internet recovery with High Sierra (what it shipped with), with wifi, with ethernet. I’ve also tried USB installer for Ventura/High Sierra with and without internet. I’ve resetFusion, tried to install on the internal as well as a external nmve drive and everything fails in a similar way. I’ve also reset NVRAM and SMC. AI suggests that the Mac's firmware is hardcoded to look for the components of the original Fusion Drive. Despite running aggressive format and erase commands, the system repeatedly automatically rebuilds a complex, broken APFS container structure that logically links the new NVMe SSD (disk1) and the old 32GB chip (disk2). The following steps were executed in macOS Recovery Mode (Terminal), but were unsuccessful in permanently breaking the logical link:

* Standard Erase: Multiple attempts to format the target drive (/dev/disk1) using diskutil eraseDisk APFS.

* APFS Container Deletion: Attempted to destroy the logical groups using APFS-specific commands, but the command was unrecognized by the Recovery OS:

* diskutil apfs deleteContainer diskX

* CoreStorage Check: Verified no old CoreStorage Logical Volume Groups were present:

* diskutil cs list (Output: No Core Storage logical volume groups found)

* Low-Level Overwrite: Attempted to use the low-level command to destroy partition metadata:

* diskutil zeroDisk /dev/disk2 (Successful on 32GB chip)

* diskutil zeroDisk /dev/disk1 (Failed with: "Could not find disk for /dev/disk1" due to system re-indexing/confusion).

What am I missing?