This article explains how to reset Safari to its default settings by deleting Safari's history and cookies, clearing the cache, and disabling extensions. Instructions apply to Safari versions 11 through 14 and iOS.

The first step in resetting Safari is to delete your browsing history. When you clear your browsing history, Safari removes data like recent searches, the list of frequently visited sites, web page icons, the history of web pages you've visited, and more.

From the Safari menu bar, select Safari > Clear History

Select All History from the drop-down menu.