OK. after ALL the time spent reading and searching I STILL do not see the solution to Shlayer on my computer

1. Remove any Profile you have not installed knowingly.

Profiles

System Preferences > Profiles

Launch System Preferences. Do you see any profiles added to the pane at the bottom next to Accessibility?

How to remove a configuration profile? https://support.apple.com/kb/PH25680?locale=en_US

2. Use Malwarebytes for Mac to remove malware.

https://www.malwarebytes.org/antimalware/mac/

Download, install , open, and run it by clicking “Scan” button to remove adware.

Once done, quit Malwarebytes Anti-Malware for Mac.

Install guide: https://support.malwarebytes.com/docs/DOC-1817

Uninstall Guide: https://support.malwarebytes.com/docs/DOC-1190

The installer may ask you to allow it in System Preferences > Security & Privacy. Allow it.

Note: After the first scan, immediately restart and do a second scan to stop adware from rewriting files.

3. Safari > Preferences > Extensions

Select and uninstall all extensions you have not installed knowingly.

Section: Manage extensions: https://support.apple.com/guide/safari/use-safari-extensions-sfri32508/mac

4. Choose a search engine.

Delete all text in the Smart Search field, click the magnifying glass , then choose a search engine from the list.

https://support.apple.com/guide/safari/customize-your-search-ibrwe75c2a3c/mac

5. Set your Home Page. https://support.apple.com/guide/safari/set-your-homepage-ibrw1020/mac

6. Restart your Mac.

7. Launch Safari holding the Shift key down.