do not query database again and again in laravel code example

Example 1: Writing into the database with one click laravel

Route::post('/signup', [
    'as'   => 'signup',
    'uses' => 'YourController@manuelSignUP',
]);

Example 2: Writing into the database with one click laravel

public function manuelSignUP()
{
DB :: table("users") -> insertGetId
(
array("firstname" => "John", "lastname"=> "John",
"passwordHash" => "password", "userslevelID" => 2)
);

DB :: table("userlevel") -> insertGetID
  (

array("userlevelID" => $userlevelID, "name" => $name)
 );

 return view("pages.manualsignup");
 }