I have a little error with pagination class

Hello, I have an error with my pagination.

I am developing a news system with comments, but when I try to page the comments that have each news, when accessing it, the pager goes to the last button in the back and I have no idea why. If you could help me I would be very grateful.

I leave a few pictures:

Controller:

PHP Code:

        // Pagination

        $config['base_url'] = base_url().'noticia/'.$idNew.'/';
        $config['total_rows'] = $this->admin_m->numCommentsId($idNew);
        $config['per_page'] = 1;
        $config['first_url'] = base_url().'noticia/'.$idNew.'/1'; 
        ($this->uri->segment(3)) ? $page = ($this->uri->segment(3)-1)*$config['per_page'] : $page = 1;

        $data['data_comments'] = $this->admin_m->getCommentsId($idNew, $config['per_page'], $page);

        $this->pagination->initialize($config);
        
        $data['pagination'] = $this->pagination->create_links();
        // End Pagination 


Mode

PHP Code:

    public function getCommentsId($idNew, $per_page, $page)
    {
        $sql = $this->db->query("SELECT * FROM comentarios JOIN usuarios ON comentarios.autorComentario = usuarios.usuario                                                    WHERE idNoticiaComentario = '$idNew'
                                                           ORDER BY idComentario DESC LIMIT $page, $per_page ");

        if($sql->num_rows() > 0)
        {
            return $sql->result();
        }else{
            return NULL;
        }
    }

    public function numCommentsId($idNew)
    {
        $sql = $this->db->select('idComentario')
                        ->from('comentarios')
                        ->where('idNoticiaComentario', $idNew);

        return $sql->count_all_results();
    } 


Routes:

PHP Code:

$route['default_controller'] = 'inicio';
$route['logout'] = 'login/logout';
$route['inicio/noticias/(:num)'] = 'inicio/index/noticias/$1';
$route['noticia/(:num)'] = 'noticia/index/$1';
$route['noticia/(:num)/(:num)'] = 'noticia/index/$1/$2';
$route['perfil/(:any)'] = 'perfil/index/$1';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE; 


Gif of the error:

Many thanks to all in advance. A greeting!