Recovering a Dead Drupal 8/9/10 Site

Drupal Version

Kevin Pittman has written a blog post called "So, You Blew Up Your Drupal 8 Site - Now What?" that covers multiple methods for recovering a dead Drupal 8 (or later) website (on the assumption you hadn't made a backup right before it died).

Editor's Note: In spite of the title, the blog post applies to all recent versions of Drupal: 8, 9, and 10.