How to add volumecontrol to alsamixer

[karagir]

With wifi disabled, the on-board bluetooth is working just fine on zero 2w.
I have:
dtparam=i2s=on
#dtparam=audio=on
dtoverlay=hifiberry-dac

At present alsamixer shows:
This sound device does not have any controls

How can we enable the volume control in the gui?
I need to control volume using:
amixer -c 0 set PCM 1.5dB+
amixer -c 0 set PCM 1.5dB-
amixer -c 0 set PCM unmute
amixer -c 0 set PCM toggle
amixer -c 0 set PCM mute

or similar commands.

I need this to map commands to ir key codes.
Kindly look into this
Thanks in advance!!

[karagir]

Is there any way that I can install pipewire-alsa and make it work?
After pipewire-alsa is installed, the alsamixer shows volume control and the following commands work, but there is no audio output.

amixer -D pipewire sset Master 5%+
amixer -D pipewire sset Master 5%-
amixer -D pipewire sset Master toggle

Kindly look into how we can make this application work with some volume up/dn and mute commands to work with headless RPi and i2s sound card.
Thanks!!