Hello and thank you for your message.
I'm already using the "non-free" Debian images which contain firmware for network cards etc.
The package "firmware-iwlwifi_20210315-2_all.deb" is correctly installed, but my Intel AX210 Wifi / Bluetooth card is not recognized and is not functional.
This problem is extremely debilitating for me (severity: high). I bought this hardware to run on Debian 10 with Backport and on Debian 11 but I cannot use it.
Best regards.
Philippe