Ok, did you open alsa mixer and get any different results?
Normally, I recommend against using Both Alsa and Pulseaudio at the same time.
But we are troubleshooting here.
Secondly, try
sudo apt install pavucontrol
Then, in terminal run pavucontrol and adjust your settings (Check mute and the like) and see if you can get sound through the PulseAudioVolume Control