My headset mic is not getting used

My headset mic is not getting used, only the internal laptop mic is getting used, which is very noisy. This is probably because I’m using a combined jack. Some solution said to add “options snd-hda-intel model=dell-headset-multi” to /etc/modprobe/hda-model.conf or /etc/modprobe/alsa-base.conf but that didn’t work too. I have amd cpu and I don’t know if the process is different for these.

I am using Nixos on asus vivobook 15 with Ryzen 5 5600H
lsmod | grep snd_hda output
cat /proc/asound/card*/codec* | grep Codec output

Have you done everything relevant on
ALSA - NixOS Wiki, PulseAudio - NixOS Wiki and JACK - NixOS Wiki?