Hello,
To disable all the copilot features go to settings in your microsoft edge, then search copilot and uncheck all the options you can find.
If you want to go further you can disable copilot from group policy.
It is called Disable Windows Copilot and can be found under User Configuration => Administrative Templates => Windows Components => Windows Copilot**.**
There are many ways to launch the group policy editor. You can do a search from the WINDOWS SEARCH TOOL BAR for "group policy" or it can be opened from the Command Prompt. Open a Windows Command Prompt and type 'gpedit' or 'gpedit. msc', then hit Enter
Hope this helps,
JC