Add a footer.php to a child theme

I’m using the Prana theme, and because I plan on customizing a bit, I created a child theme for it, except now, I can only view the style.css when I go to the editor and the css isn’t there and I would like to use a footer menu. I was told the best way to do that was to add go into the footer.php, but I don’t have one. How do I create one? This is my site: https://casllcky.com/ and I’m looking to have a footer like this one with a privacy statement as well as having the angie’s list and bbb logos etc.