codelgniter mobile adres 404 not found

I’m getting a 404 error when opening the project on a mobile screen. I’m using the CodeIgniter framework and Mobildetect. Can you help me?

application/modules/anasayfa/controllers/Anasayfa.php

`<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Anasayfa extends CI_Controller {

    public function __construct() {
        parent::__construct();
        $this->load->helper("url");
        $this->load->database();
        $this->load->library("session");
        $this->load->library('MobileDetection'); // Mobil tespit kütüphanesini yükleyin
        $this->lang->load('tank_auth');
    }

    public function index() {
        // Mobil tespit işlemi
        if ($this->mobiledetection->isMobile()) {
            redirect('mobil_adres'); // Mobil yönlendirme
        } else {
            // Masaüstü tespit işlemi
            $data["slayt"] = $this->db->select("*")->get('slayt')->result();
            $data["duyuru"] = $this->db->where("durum", 1)->select("*")->get('duyurular')->result();
            $this->load->view('anasayfa', isset($data) ? $data : NULL);
        }
    }
}
`

m/application/modules/welcome/controllers/Welcome.php

`<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Welcome extends CI_Controller {

    /**
     * Index Page for this controller.
     *
     * Maps to the following URL
     *      http://example.com/index.php/welcome
     *  - or -
     *      http://example.com/index.php/welcome/index
     *  - or -
     * Since this controller is set as the default controller in
     * config/routes.php, it's displayed at http://example.com/
     *
     * So any other public methods not prefixed with an underscore will
     * map to /index.php/welcome/<method_name>
     * @see https://codeigniter.com/user_guide/general/urls.html
     */

    function __construct()
    {
        parent::__construct();
        $this->load->helper("url");
        $this->load->database();
        $this->load->library("session");
        

    }
    


    public function index()
    {

$data["tur_listesi"]=Genel::tur_listesi();
 $this->load->view('anasayfa',isset($data) ? $data : NULL);
    }



}
`

m/application/config/routes.php

`<?php
defined('BASEPATH') OR exit('No direct script access allowed');

/*
| -------------------------------------------------------------------------
| URI ROUTING
| -------------------------------------------------------------------------
| This file lets you re-map URI requests to specific controller functions.
|
| Typically there is a one-to-one relationship between a URL string
| and its corresponding controller class/method. The segments in a
| URL normally follow this pattern:
|
|   example.com/class/method/id/
|
| In some instances, however, you may want to remap this relationship
| so that a different class/function is called than the one
| corresponding to the URL.
|
| Please see the user guide for complete details:
|
|   https://codeigniter.com/user_guide/general/routing.html
|
| -------------------------------------------------------------------------
| RESERVED ROUTES
| -------------------------------------------------------------------------
|
| There are three reserved routes:
|
|   $route['default_controller'] = 'welcome';
|
| This route indicates which controller class should be loaded if the
| URI contains no data. In the above example, the "welcome" class
| would be loaded.
|
|   $route['404_override'] = 'errors/page_missing';
|
| This route will tell the Router which controller/method to use if those
| provided in the URL cannot be matched to a valid route.
|
|   $route['translate_uri_dashes'] = FALSE;
|
| This is not exactly a route, but allows you to automatically route
| controller and method names that contain dashes. '-' isn't a valid
| class or method name character, so it requires translation.
| When you set this option to TRUE, it will replace ALL dashes in the
| controller and method URI segments.
|
| Examples: my-controller/index -> my_controller/index
|       my-controller/my-method -> my_controller/my_method
*/
$route['default_controller'] = 'welcome';

$route['mobile/sport/(:any)'] = "sport/index/$1";
$route['mobile/sport/(:any)/(:any)'] = "sport/index/$1/$2";
$route['mobile/content/(:any)'] = "content/index/$1";
$route['mobile/fixture_details/(:any)'] = "fixture_details/index/$1";

$route['mobile/coupon/'] = "coupon";
$route['mobile/refreshcoupons/'] = "refreshcoupons/index";


$route['mobile/login'] = "account/login";
$route['mobile/dologin'] = "account/dologin";
$route['live_details/(:any)'] = "live/getlivedetails/$1";



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


$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;
$route['mobil_adres'] = 'welcome';


//$route['(:any)'] = "welcome/seo/$1";
`

.htaccess

`<IfModule mod_rewrite.c>
    RewriteEngine On
    RewriteBase /
    RewriteCond %{REQUEST_URI} ^system.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]
    RewriteCond %{REQUEST_URI} ^application.*
    RewriteRule ^(.*)$ /index.php?/$1 [L]
    RewriteCond %{REQUEST_FILENAME} !-f
    RewriteCond %{REQUEST_FILENAME} !-d
    RewriteRule ^(.*)$ index.php?/$1 [L]
    
    <FilesMatch "\.(svg|ttf|otf|eot|woff|woff2)$">
Header set Access-Control-Allow-Origin "*"
</FilesMatch>
</IfModule>`

I expected the page to load normally on mobile devices without any errors.