You can manually edit the Registry to get the old right-click context menu in Windows 11. Just go to the required key and edit its value. Here is the step by step procedure for doing that:
Open Registry Editor.
Navigate to the HKEY_CURRENT_USER\Software\Classes\CLSID
Look for the key named {86ca1aa0-34aa-4e8b-a509-50c905bae2a2} If there is none, create one.
Create a new sub-key named InprocServer32.
Set the value of the Default string to blank.
Close Registry Editor and reboot your PC or restart Windows Explorer.