Correct approach to use JWT in laravel - php

Question

i've reviewed some articles and forums to figure out how to implement JWT authentication in my backend.
the problem is that i've seen different approaches and idk which one is correct.
consider that i've already installed JWT package.
after that some do this:
'defaults' => [
'guard' => 'api',
'passwords' => 'users',
],
'guards' => [
...
'api' => [
'driver' => 'jwt',
'provider' => 'users',
],
],
and then in Controllers constructor using
$this->middleware('auth:api');
to validate user. they say setting 'driver' => 'jwt' will make default guard jwt. also they use
$token = auth()->attempt($credentials)
to validate token. this was first group approach.
second ones never change anything in config/auth.php (no driver change - no gaurd change ...).
they use a middleware in app/Http/Kernel.php (routeMiddleware):
'auth.jwt' => \Tymon\JWTAuth\Http\Middleware\Authenticate::class,
and when making routes they apply it using a group, like:
Route::group(['middleware' => 'auth.jwt'], function () {
Route::get('logout', 'ApiController#logout');
Route::get('user', 'ApiController#getAuthUser');
Route::get('products', 'ProductController#index');
Route::get('products/{id}', 'ProductController#show');
Route::post('products', 'ProductController#store');
Route::put('products/{id}', 'ProductController#update');
Route::delete('products/{id}', 'ProductController#destroy');
});
also they use $jwt_token = JWTAuth::attempt($input) or $this->user = JWTAuth::parseToken()->authenticate(); to get and validate user.
im'm confused with these approaches, should i use jwt as default guard? or i just add it to my packages and use it explicitly?