automatically change data returns from the model in CodeIgniter 4

I want to change automatically the data returns from the model in CodeIgniter 4.
That’s what comes to my mind, but it’s not works:

class UserModel extends Model {
    protected $afterFind = ['getImage'];
        
    protected function getImage(array $data) {
            if ($data['user_image'] == 0) {
                    $data['user_image'] = "New Value";
            }
            return $data;
        
    }
}

Anyone have an idea how to do that?
Thanks.