For changing Footer Options please go to WordPress Dashboard > Deep > Theme Options > Footer tab.
Footer Top Area: In this tab, options related to footer top area features such as Instagram, social and subscribe form is included, which you can enable or disable them based on your needs.
Footer: In this tab, options related to footer and columns for widgets are included. Also, for changing the background color and style color, dark and light modes are available. (The difference between dark and light is that in dark, texts are lighter and background is dark, and light is exactly the opposite).
Footer Bottom Area: In this tab, options related to copyright are included.
Footer Builder: Please follow This Link for more information about footer builder.