That would likely depend on the theme you are using, perhaps there is an option to display the footer on other pages? Or perhaps the footer widget is only applied to the home page, and you’d need to explore a different method of getting a cohesive footer across all of your pages.
Here is an article detailing a few footer-specific plugins that might help.
Ref: https://www.sourcewp.com/best-wordpress-footer-plugins/
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