Download a copy of all your Google data . ..

[Sasha]

Download a copy of all your Google data . ..

You may never need it, but having an offline version of your information is always a wise thing to do.

You may one day lose access to the internet, forget your account password, or you may not be able to log into your Google account for any reason.

So Google has an official tool called Google Takeout that allows you to download almost all your account information.

Google Takeout
https://takeout.google.com

From this section you can find information on services such as:
• Gmail
• Google Drive
• Google Photos
• Contacts
• Calendar
• Chrome
• Maps
And get dozens of other services as an archive file.

By the way, if you want to see what Google has recorded from your activities, check out Google My Activity, the same page that many people jokingly call "Google's letter of action"! 

Google My Activity
https://myactivity.google.com

From here you can see, Manage, or delete search history, use Google services, and part of your account's stored activities.