Show table of users with their avatars

Hello, I am not an advanced user, so you can help me.
I have a php that creates a table of users, with a score.

The php is programmed to show the default wordpress avatar. But the avatar of this plugin, so it doesn’t show it.

add_filter( 'footballpool_ranking_template_start', 
                function( $template_start, $league, $user, $ranking_id, $all_user_view, $type) {
    // add a row with column headers
    $template_start .= sprintf( '<tr>
                                    <th></th>
									<th>ID</th>
                                    <th class="user">%s</th>
                                    <th class="score">%s</th>
                                    %s</tr>'
                                , __( 'user', 'football-pool' )
                                , __( 'points', 'football-pool' )
                                , ( $all_user_view ? '<th></th>' : '' )
                        );
    return $template_start;
}, null, 6 );
add_filter( 'footballpool_ranking_ranking_row_template', function( $template, $all_user_view, $type ) {
    if ( $all_user_view ) {
        $ranking_template = '<tr class="%css_class%">
                                <td style="width:3em; text-align: right;">%rank%.</td>
								<td class="user">%user_id%</td>
                                <td><a href="%user_link%">%user_avatar%%user_name%</a></td>
                                <td class="ranking score">%points%</td>
                                <td>%league_image%</td>
                                </tr>';
    } else {
        $ranking_template = '<tr class="%css_class%">
                                <td style="width:3em; text-align: right;">%rank%.</td>
								<td class="user">%user_id%</td>
                                <td><a href="%user_link%">%user_avatar%%user_name%</a></td>
                                <td class="ranking score">%points%</td>
								<td>%league_image%</td>
                                </tr>';
    }
    return $ranking_template;
}, null, 3 );
?>