Clearing Activity @ Google

In the main section of the My Activity section of your Google account, you’ll be able to view and delete your Android usage data, Voice & Audio data, Google Assistant data (searches, smart home control, etc.), search data, and ads.

You can delete them one by one by simply clicking the three dots on the right of each entry and clicking Delete.

You can also batch delete by activity type or date like this:

1.) Visit the My Activity (https://myactivity.google.com/myactivity) section of your Google account.
2.) Click the three vertical dots on upper right side of your screen.
3.) Click Delete activity by.
4.) Click Today to open the dropdown.
5.) Click All time to delete all of your activity ever.
6.) Click DELETE to simply delete all of your activity today. You can optionally set a date range. You can also choose to delete data based on keyword, Google product, or type of activity.
7.) Click Delete in the pop-up.