I have sound but no way to change volume – Xubuntu 20.04 LTS

I have recently installed Xubuntu 20.04 LTS and I noticed something strange, I do have sound and it works well but I don’t have any indicator of volume in the panel.

I tried using alsamixer to change it, but there I see that all the channels are set to 0 and there isn’t any volume on any of them:

alsamixer no volume

This is a really odd problem and to be honest I have no idea how to troubleshoot it. Hope that someone could help me.