Having trouble retreiving pages of website

I'm a WordPress beginner. I would like to simply display links to the pages in my website as list items in the footer. The WordPress get_pages() doesn't seem to work. Here is a part of my footer.php code:

?php
/**
 * The template for displaying the footer.
 *
 * Contains the closing of the #content div and all content after
 *
 * @package understrap
 */

$the_theme = wp_get_theme();
$container = get_theme_mod( 'understrap_container_type' );
$all_pages = get_pages();
?>

<?php get_template_part( 'sidebar-templates/sidebar', 'footerfull' ); ?>

<div class="wrapper" id="wrapper-footer">

    <footer>
        <div class="<?php echo esc_attr( $container ); ?>" id="main-footer">
            <nav class="row">
                <ul class="col-sm-3">
                    <li><strong>name of website</strong></li>
                    <?php foreach ($all_pages as $page):?>
                        <?php $title = $page->title;?>
                        <?php $link = $page->url;?>
                        <li> <a href="<?php echo $link?>"><?php echo $title?> </a></li>

Am I using the get_pages() function wrong?