Go to https://history.google.com/
Sign in with the Google account you want to manage
Click Delete to remove items
Choose:
Delete for today
Delete custom range
Delete all time
Confirm by selecting Delete
To manage specific searches:
Find the search item(s) in the list
Select the trash icon or Delete next to the item
To delete Google Search activity automatically:
Go to https://myactivity.google.com/
Select Delete automatically
Choose a time period (e.g., 3 months, 18 months, or 36 months)
Turn on Auto-delete
To turn off Search history recording (stop saving new activity):
Go to https://myactivity.google.com/
Under Web & App Activity, toggle off Include Chrome browsing history and Web & App Activity (wording may vary)
Confirm when prompted