URL Encryption Issues

Dear, Viewers I am facing issue with URL Encryption, I have done almost but stacking in some case let me explain...

First Try: I have encrypted the URL by custom function & then I route the page to common controller like below

$route["(:any)"] = "Decrypt/index/$1"; 

Below is Decrypt Controller code

PHP Code:

    public function index()
    {
        $get_url = $this->uri->segment(1);
        $dcrypt_url = decrypt_url($get_url);

        if(!$dcrypt_url){
             redirect(base_url().$get_url);
        }else{
             redirect(base_url().$dcrypt_url);
        }
    } 


So its decrypt & redirect to desire page, but the issue is URL is not encrypted anymore example this was the encrypted url:

http://example.com/ded055278695fe8a7c8b2...wVkm.2QV1o-

After decrypt its become http://example.com/users & when its redirect URL is not encrypted anymore its showing decrypted url. I want URL will be remain encrypted. hope experts understand.

2nd Try: 

PHP Code:

    class Home extends Crypto_Controller {
    
    function __construct()
    {
        parent::__construct();
        if(!$this->session->userdata('id'))
        {
            $this->session->sess_destroy();
            redirect('login', 'refresh');    
        }
        $this->load->model('M_users');        
    }


    public function index()
    {
        $data['users']=$this->M_users->getAllUsers();
        $get_url = $this->uri->segment(1);
        $dcrypt_url = decrypt_url($get_url);

        if(!$dcrypt_url){
            echo $this->load->view($get_url, $data, TRUE);
        }else{
            echo $this->load->view($dcrypt_url, $data, TRUE);
        }
    } 


In above code url is remain encrypted & working fine but as you can see I have load the modules to pass the data of users, I believe each & every controller & module should separate & just load when the paged called it, but by this way all models will load when page will load which is make site slower.

I hope someone can guide me or suggest me to reach my goal, T.I.A