I really didn't want to write up all the things I have tried in the last two weeks. Nor did I want to force you to read all of it.
I've been trying to follow what was done in the document at the link below...
I purchased one of the sound cards recommended in the pdf.
As I said, I'm no Linux expert. I did execute the commands in the document to remove Pulse, but I wouldn't know how to confirm it was successfully removed.
I have a degree in electronics and over 30 years of experience in the business so you can get technical about electronics. For things specific to Linux I will need detailed help.