Here’s a fun fact: Every time you do a voice search, Google records it. And if you’re an Android user, every time you say “Ok Google,” the company records that, too. Don’t freak out, though, because Google lets you hear (and delete) these recordings. Here’s how.
Head over to Google’s Voice and Audio Activity page and start deleting all those recordings. You can delete them individually or all at once, just click the More > Delete Options > Advanced to get there. Each file will also have a plain text transcript and recording information associated with it for your perusal. While you’re shoring up privacy settings, you can also tell Google to stop tracking which web pages you visit here, or turn off everything from a map of stored locations to YouTube watch history on this page.
Here is the link to the Gizmodo article: https://gizmodo.com/how-to-listen-to-and-delete-everything-youve-ever-said-1780366724