Thank you blunix and GatorsFan (and everyone else) for the tips. I am going to try and figure this out for the long term and learn more about SIP and throw away numbers that blinux suggested. I guess I could get a cellular 'land-line'. They do make such things, but it would irritate me that I'd be paying every month for something I probably wouldn't use much. And it wouldn't solve the problem of verification codes.
In the mean time my solution was to ask a friend to let me use their number to link to google voice. I had him email me the confirmation code at an agreed time. This worked and I used it for my purpose. But it has some downsides:
First, I had to use an ancient gmail account that I haven't looked at in years. I was hoping I'd never see it again -- you can imagine the junk mail in there.
Second, Google Voice is browser specific and won't work in Brave, so I had to install Firefox.
Third is I had to allow google use of my microphone.
Fourth is I'm still using a cell phone. Just not mine...
I dislike Google's interface, their hatred of anonymity, their politics etc and so it was a bit slimy, but it did the job. It was so easy that you know it's bad for you.
This past week has been a hassle for something anyone else could have taken care of in one second, but if you add up all the days that I haven't been bothered by that cursed, vibrating, ringing tracking device it is well worth it and I recommend it as a goal to work towards for anyone else interested in that lifestyle. Just not needing to check it all the time probably saves a few days a year.
It sucks that a phone number is assumed but that is how things are. I'd like to see a desktop replacement for the phone. Not just an extension of an existing phone.