Open the Settings app
Scroll down and tap Safari
Tap Clear History and Website Data
Tap Clear History and Data to confirm
If the option is grayed out, check Screen Time restrictions
To delete specific sites, open Safari
Tap the Bookmarks icon
Tap the History tab
Swipe left on a specific item and tap Delete
To clear all browsing data, go to Settings
Tap Safari
Tap Advanced
Tap Website Data
Tap Remove All Website Data