Open Google Search
Sign in to your Google account
Go to your Google Account
Select Data & privacy
Under History settings, choose Web & App Activity
Click Manage all Web & App Activity
Select Delete
Choose Delete today, Delete custom range, or Delete all time
Confirm the deletion
To stop future saving, turn off Web & App Activity
On mobile, open the Google app
Tap your profile picture
Tap Search history
Tap Delete
Choose the time range and confirm