Sequoia broke switching Microsoft keyboards to Mac formatting

I have a tentative solution, which I found by searching under system settings for keyboard which led me to instructions by Chris Vec from 2016. https://chrissvec.com/configuring-microsoft-sculpt-keyboard-for-mac/ He specifically wrote the instructions for the Microsoft Sculpt Keyboard, but when tested them they seem to fix the problems apparently introduced by Sequoia. The problem is the modifier keys at the lower left side of the keyboard. They are not mentioned in the main Keyboard section, but if you search for "Modifier Keys" you will find where you need to make the changes, now listed under "Microsoft Ergonomic Keyboard." Vec's instructions show to change the Command Key to Option and the Option key to Command. I did it and so far it works. Thanks to Chris Vec for his original instructions and for your comments that encouraged me to dig around and realizing that the Vec's early instructions would work for newer Microsoft keyboards.

When I try to type CommandC I get ç

When I try to type a bold B I get ∫

When I try to type COMMAND V (paste) I get √

Trying to do a screen shot gives me a ›

When I go to software settings/Keyboard/ and click on Change Keyboard Type, it asks me to type what is at the right of left SHIFT key and I type Z. Then it asks me to type what is at the left of the right SHIFT key and I type / (lowercase on the ?)

This produces three options: ANSI (US), JIS (Japan) and ISO (international) ISO/IEC 9995 All three give me the same results when I try to do things like COMMAND V, so I cannot type commands. However, some of the Japenese results are different.

I'm wondering if I screwed something up or the Microsoft keyboard is whacky, but this worked under Sonora.

Typing on an old Apple Pro Keyboard is very awkward, but at least it lets me select words to copy and paste, and trying to type a bold B gives me one. However, it slows my typing to a crawl, which won't work.