Any advise to help setup my yahoo mail account on my MAC OS

Yes, choose "other" to set up the account, this will give you more options, if you trick the set up with a bogus email address.

Pick "other mail account"enter your real email address but at the end add a letter like xxx@yahoo.comZ

Enter your actual password

fill out the next screen and remove the last letter "Z" in the email address so now your email is your correct address

and pick POP mail (if you do not do this it may default to IMAP)

enter incoming mail as pop.mail.yahoo.com (or IMAP)

enter outgoing mail as smtp.mail.yahoo.com

You will also have to go to your Yahoo mail security settings on the web and change to "less secure" protocol for POP to work correctly. This was a recent change by Yahoo

ref: https://discussions.apple.com/thread/8307599

IMAP server settings for Yahoo Mail | Yahoo Help - SLN4075

POP access settings and instructions for Yahoo Mail | Yahoo Help ...

I have Yahoo mail set up with thunderbird.

Are you setting it up with apple mail?

R