Sign in as a “guest” on your Android device by swiping down from top and tapping the downward-facing caret, then again on the torso icon. Be aware of which services you sign in on, like Chrome.

You can also change search engines even in Chrome.

To Delete Past Location Tracking 

For any device:

On the page myactivity.google.com, look for any entry that has a location pin icon beside the word “details.” Clicking on that pops up a window that includes a link that sometimes says “From your current location.” Clicking on it will open Google Maps, which will display where you were at the time.

You can delete it from this popup by clicking on the navigation icon with the three stacked dots and then “Delete.”

Some items will be grouped in unexpected places, such as topic names, google.com, Search, or Maps. You have to delete them item by item. You can wholesale delete all items in date ranges or by service, but will end up taking out more than just location markers.