How to make paging from the basics

Hi and thank you for your help, unfortunately I found some mistakes in adapting my code.

Is there some way to adapt it to my controller public function index() ?

PHP Code:

class Post extends CI_Controller {
    
    public function __construct() {
        parent::__construct();
        $this->load->model('post_model');
        $this->load->helper('url_helper');
        $this->load->helper('text');
    }
    
    public function index() {
        $data['title'] = 'Title';
        $data['desc'] = 'Enter the description of this page index';
        $data['post'] = $this->post_model->get_post();    
        $this->load->view('templates/header', $data);
        $this->load->view('index', $data);
    }