I am unable to adjust sound volume in HomePod

I have the large sized HomePod as well as 2 mini pods. All are in different rooms within the home. I have to say that the HomePod is probably the worst sounding device I have ever purchased and what makes me even more upset - this is the only way I can listen to my music unless of course, I want to listen to it on a device, which is not ideal as all my devices are not going to deliver a robust sound. Can someone please help me with this problem? I’ve tried increasing the volume on my device as well as manually increasing it on the HomePod and this doesn’t seem to work. There is no way that Apple designed the HomePod to have this terrible sound which cannot be increased to a level of loudness that sound systems should all have. Especially this HomePod, as everything I read about it prior to purchase boasted how great of a sound it delivered and compared it to something as good as a Bose System. Which is so far off from what it really sounds like. Please advise.

[Re-Titled by Moderator]