pulseaudio – USB Headset allowing selective apps only to play sounds

I have 2 different USB headsets, both have the same problem on Linux Ubuntu 20.04.

The screenshots below are when I connect the Jabra quantum 400.

They only play sounds from certain apps – e.g. I can hear every audio file playing within google chrome – youtube or whatsapp messages.

I can also hear the Alert Sounds played from the sound settings (screenshot below)

But I cannot hear the ‘test’ sounds in the test feature of the sound settings.

Nor can I hear sounds from any apps installed – vlc or skype or teams.

I have installed pulseaudio but for some reason I cannot get any UI to show up. I also have pulsemixer (screenshot attached)

I also have sound switcher installed and as you can see in the screenshot there seems to be something not correct, at least that is my impression.

Any ideas what I could fix that I can hear sounds from regular Linux apps and not just google chrome.

I installed canberra pulse and pavucontrol (based on other answers) but it did not help

sudo apt-get install -y libcanberra-pulse
sudo apt install pavucontrol

I also tried this answer although I do not have the same UI of the pulseaudio nor sound settings
No sound on USB headset. How to manage soundcards and audio devices?

When playing any audio from google chrome (which i can hear) this is what I see in the audio settings. the volume bar is showing output