Sushil Adhikari

It’ll be in your theme files….but as it is often warned that when making theme file modifications, you need to use a child theme so that you can keep getting theme updates and not lose your custom changes. If you are using a child theme, you would copy the footer.php file into the child theme and then make your changes there…normally with the Edit under the admin Appearance menu group.

A reminder that if you are not using a child theme and you decide to do this, it means when you activate your child theme, you have to redo your theme options and settings again because WordPress would see this as a new theme activation.