Bookmarks on the Mac to browse
- You Open Safari.
- Click in the menu bar, click "bookmarks" and "show bookmarks".
- In the resulting bookmarks bar to scroll to the top.
- There is the search field, to search bookmarks.
- Type in a word. The bookmarks will be filtered by this word are searched and so on.

Bookmarks browse
Read also, how to you use iCloud Tabs in Safari to disable.