This approach works with Google and Microsoft, if it is allowed by the administrator.
Tip: The trick is knowing how to customize your settings. Here are settings for Claws-Mail that will also work with Thunderbird.
Note: May Not Work Due to Changes in Permissions
Note: This only works with your PERSONAL Gmail, not your Google Workspace account.
The old Google Takeout makes it easy to save all your Google content as files you can save on your computer or a USB external flash drive. The main benefit is that it lets you get copies of much more than Drive and Gmail. You can get Google Photos, Google Sites, Blogger posts, etc.
While it works well, you are going to need a program like MS Office 365 to open the files. You may want to rely on a free, open source solution (FOSS) solution like LibreOffice, OpenOffice, or NeoOffice. All of these work on Windows, Mac, or GNU/Linux operating systems, but not Chromebook.