Google Takeout is the official way to create a one-time archive of every file you own in Google Drive. This is ideal for backups or moving to a different service. How to download your Google data - Google Account Help

To download everything from Google Drive, you can use for a complete account export, the Google Drive for Desktop app for continuous syncing, or a manual download for smaller batches of files. 1. The Best Method: Google Takeout (Complete Export)