How to Add a Copyright to the Footer of Your WordPress Website
I kept on looking for an easier way. After lots of frustrations from failed trials, I went back online to read more. I found a great article that explained how it is done in a very simple way, by using YOUR THEME.
I found out that I could update the copyright in the footer LIVE by using my theme. I'm not sure if the theme you use allows you to make changes live, while you are typing, but I'll show you below how I did it on my website.
(1) Go to Appearance in your theme and select Customize.
(2) it will take you to the menu list where you can update things live. Click on footer.