gistfile1.txt

    $search_unique_id = esc_attr( wp_unique_id() );
    ?>
        <form role="search" method="get" class="search-form" 
        action="<?php echo esc_url( home_url( '/' ) ); ?>">
        <label for="search-input-<?php echo ( $search_unique_id ); ?>" class="label-large"> Enter what you want to search for</label>
        <input type="search" id="search-input-<?php echo ( $search_unique_id ); ?>" required class="search-field" placeholder="<?php echo '" name="s"'; ?> /> 

================================

example output:

<form role="search" method="get" class="search-form" action="https://local.wordpress.test/">
<label for="search-input-1" class="label-large"> Enter what you want to search for</label>
<input type="search" id="search-input-1" required="" class="search-field js-first-focus" placeholder="" name="s">