Open your Google Account
Go to My Activity
Sign in if prompted
Click Delete
Choose Delete activity by
Select the time range
Choose the Google products you want to delete from
Click Next
Confirm by clicking Delete
To delete a single search, find the item in My Activity
Click the three-dot menu next to it
Select Delete
To pause future search history, go to Activity controls
Turn off Web & App Activity
To delete search history from the Google app, open the app
Tap your profile picture
Tap Search history
Tap Delete
Choose a time range or specific items
Confirm deletion