Apple does not allow users to add a new search engine to Safari. If users want to use Safari or Spotlight to search from web, they have no choice but to use whatever search engine provided by Apple.
To use any search engine as the default search engine on macOS, iOS or ipadOS globally. Startpage is used here as an example. This means apple device owners can:
- Use Startpage as the default search engine in Safari address bar.
- Use Startpage as the default search engine in Spotlight.
- Override
Search with Googlein macOS Context Menu. - Override
Search Webin iOS and iPadOS Context Menu.