Have you tried using snd_hda_intel instead of firmware-sof-signed?
That is pretty new hardware, so you may need the latest available kernel.
If you are not dual booting with Windows OS, then disabling Secure Boot in your BIOS settings is first step, then installing the Mainline installer:
And using it to select the 6.18.7 and then clicking "Install"
Reboot if installed with now errors to test.