Did you add this line? And you also have to make sure these configs are below a “[all]” stanza, else they won’t be relevant for your system. And I would also explicitly set
dtparam=audio=off
This might not be necessary, but since I don’t know the default for dtparam=audio, I explicitly set it to off.
I checked the lite-installation and did not find any pipewire (or pulse-audio) packages, so this should not be the problem. And your alsamixer output is fine.