How To Change Footer Styles ?

Aryan has 7 different unique Footer Styles available which you can choose for your website from

Theme Options > Footer Settings >

You can select the footer style of your choice and configure it from the available options.

How to Configure Widgets here?

The Footer style 1 and 6 does not have widgets options available so you cannot show widgets while using them

Rest Footer other Styles have widgets which you can drag and drop from Appearance > Widgets > Footer Columns

You can also set the Footer widgets column while footer selection configurations.