WordPress why is the get_search_form filter not working?

Question

WordPress

I want to customize the search form using this code:

add_filter( 'get_search_form', function ( $form ) {

  $form = '
  <form role="search" method="get" id="searchform" action="' . home_url( '/' ) . '" >
    <label class="screen-reader-text" for="s">Запрос для поиска:</label>
    <input type="text" value="' . get_search_query() . '" name="s" id="s" />
    <input type="submit" id="searchsubmit" value="Найти" />
  </form>';

    $form = '
    <div class="widget widget_search">
        <form id="searchform" method="get" role="search" action="' . home_url('/blog/') .'">
            <input class="text-search" type="text" onfocus="" placeholder="Search here..." value="' . get_search_query() . '">
            <input type="submit" class="submit-search" value="">
        </form>
    </div>';

    return $form;
} );

Nothing changes in the search widget in the sidebar, it only changes if you call the widget itself using the get_search_form () function, but I need it to work in the sidebar too, creating the formsearch.php file also did not help