I appreciate that you have let us know which theme you are using as that is very helpful! Looking into the Debut theme, I noticed that we can navigate to the Theme Editor and select on the footer section, you can remove the blocks to allow only two columns on the section. I took a screenshot from my test store to show you the specific area I am referencing:
In this case, if you have made these changes and the footer section is not displaying to your liking, you could make a custom coding change to the theme. Since the Debut theme is designed and supported by Shopify, we can use free design time for Shopify themes to have our internal team make the changes on your behalf.
If you are interested in using the design time, you will need to login to your store using our Contact Us page. This will allow us to securely verify you as the store owner before speaking directly with a Support Advisor about the changes you would like to see.