shortcode to list all post titles in a given category – with parameter

// pass term of CPT as parameter
function team_menu_list($attr){
    wp_reset_query();

    // assign any value here to create parameter array
    $attributes = shortcode_atts( array(
        'termname' => 'nba',
    ), $attr );

    $term = $attributes['termname'];
    
    // get all CPTs with that term
    wp_reset_query();
    
    // create argument list for query
    $args = array('post_type' => 'team',
        'tax_query' => array(
            array(
                'taxonomy' => 'sport',
                'field' => 'slug',
                'terms' => $term 
            )
        ),
        'order' => 'ASC',
        'posts_per_page' => 1000,
     );
    
    $loop = new WP_Query($args);
    
    // create string to return via shortcode
    $catstring .= '<ul>';
    while($loop->have_posts()) : $loop->the_post();
        $catstring .= '<li><a href="' . get_the_permalink() . '">' . get_the_title() . '</a></li>';
    endwhile;
    $catstring .= '</ul>';
    return $catstring;
}
add_shortcode('team_menu', 'team_menu_list');