This’ll freak you out

Try it. I dare you.

TLDR;

1. Head to the Google My Activity page. This collects everything from YouTube videos you’ve watched to apps you’ve opened on your Android phone.
2. Apply a filter to only show voice recordings by clicking Filter by date & product at the top of the list, under the search bar.
3. Scroll down and select both the Assistant and Voice and Audio boxes to show all activity with recordings. If you want, you can set a time frame, such as Last 30 days, by using the Filter by date section at the top.
4. Click Apply.

Source: Your Phone Is Secretly Always Recording: How to Stop Google From Listening