my model does not work as expected

Hi, I have a users table in the database the problem is when I want to update a selected row in the table using save or update function it does not update.
I don't know why but I'm sure that the code is fine.
Below is the function that updates the selected row.

PHP Code:

public function edit_profile()
    {
        if ($this->request->getPost()) {
            $email = $this->request->getPost('email');
            $username = $this->request->getPost('username');
            $model = new UserModel();
            $site_session = new site_session();
            $id = session()->get($site_session->userid());

            echo $id . ' ', $email . ' ' . $username;
            $model->save([
                'id' => $id,
                'email' => $email,
                'username' => $username
            ]);
        }
        //    return  redirect()->to('profile');
    } 


My model 

PHP Code:

<?php

namespace App\Models;

use CodeIgniter\Model;
use site_session;

class UserModel extends Model
{

    protected $table      = 'users';
    protected $primaryKey = 'id';

    protected $returnType     = 'array';
    protected $useSoftDeletes = true;

    protected $allowedFields = ['email', 'username', 'password'];

    protected $useTimestamps = true;
    protected $createdField  = 'created_at';
    protected $updatedField  = 'updated_at';
    protected $deletedField  = 'deleted_at';

    protected $validationRules    = [
        'email' => 'required|valid_email',
        'username' => 'required|min_length[2]|max_length[10]|is_unique[users.username]',
        'password' => 'required|min_length[8]|max_length[20]'
    ];
    protected $validationMessages = [
        'email' => [
            'required' => 'This field is required',
            'valid_email' => 'email is not valid make sure you wrote it right'
        ],
        'username' => [
            'required' => 'This field is required',
            'min_length' => 'the min username is 2',
            'is_unique' => 'this username is takken',
            'max_length' => 'the max username is 10'
        ],
        'password' => [
            'required' => 'This field is required',
            'min_length' => 'the min pasword is 8',
            'max_length' => 'the max pasword is 20'
        ]
    ];
    // protected $skipValidation     = false;

    protected $beforeInsert = ['hashPassword'];
    protected $beforeUpdate = ['hashPassword'];

    protected function hashPassword(array $data)
    {
        if (!isset($data['data']['password']))
         return $data;

        $password = $data['data']['password'];
        $data['data']['password'] = password_hash($password, PASSWORD_DEFAULT);
        
    
        return $data;
    }

    public function validateUser($data , $password){
        if(password_verify($password , $data)){
            return true;
        }
        if(password_verify($data , $password)){
            return true;
        }
        return false;
    }
}