Show Specific Footer Widget for Specific Pages

There are several ways you can achieve this:

A. Use CSS to hide and show widgets based on which page you are on. This is fine as a workaround, but it isn’t really solving your problem, especially if you have lots of pages/widgets.

B. Call a different widget area in your template file with conditional logic

<ul class="row">
   <?php if(is_page('my-page')){
      dynamic_sidebar('footer-sidebarprestige');
   } ?> 
</ul>

C. Use a plugin like Widget Logic to use conditional logic on the widgets themselves. You can then add a condition like is_page('my-page') for displaying the widget, on a widget-per-widget basis.