Cannot find the way to make #if statement works in blade - php

Question

I'm making a "teacher's" app, and I want to make a log-in page which changes depending if there's registered users in the database or not.
I want to make a redirection button to a create user page if there aren't auth users in database, and to make a select user view if the database have one or more users.
The problem is that I don't know how to exactly do this, 'cause the view always shows me the first statement (what I've got in the if), also if in the database are registered users. Can anyone help me with this please?
This is the blade file:
#if (empty(Auth::user()->id))
<div class="grid-item" id="grid-item5">
<div id="title">
<h1>Welcome</h1>
<p>We see there aren't users</p>
</div>
<div id="loginForm">
<button type="button" onclick="window.location='{{ url("/newUser") }}'">Button</button>
</div>
</div>
#else
<div class="grid-item" id="grid-item5">
<div id="title">
<h1>Select an user</h1>
</div>
<div id="loginForm"></div>
</div>
#endif
Here you have the controller index method:
public function index()
{
$users = User::all();
return view('/', compact('users'));
}
And finally here you have the page:

Answer 1

The following code is the sample for it, kindly replace code accordingly
#if(!$user)
//show button
#else
//dont show button
#endif

Answer 2

I think your question is you want to check if there is user in database.
So no need to check if the user authenticated but to check if there is user on the database.
In your controller
public function index() {
return view('/', ['users' => User::all()]);
}
and in your blade file
#if(!$users)
<div class="grid-item" id="grid-item5">
<div id="title">
<h1>Welcome</h1>
<p>We see there aren't users</p>
</div>
<div id="loginForm">
<button type="button" onclick="window.location='{{ url("/newUser") }}'">Button</button>
</div>
</div>
#else
<div class="grid-item" id="grid-item5">
<div id="title">
<h1>Select an user</h1>
</div>
<div id="loginForm"></div>
</div>
#endif

Answer 3

This function will get the current authenticated user: Auth::user(). I guess what you are trying to achieve is #if(empty($users)) where $users is the variable you are passing on controller.
If you want to verify if the user that accessed to that view is authenticated you can simply use #auth and #guest.
Also i would suggest you to change your button to an <a> tag and your href would be <a href="{{ route('route.name') }}" where route.name would be defined in your routes file.
in your controller:
you can create a folder inside views called users and then the index.blade.php (views/users/index.blade.php)
public function index()
{
$users = Users::all();
return view('users.index')->with('users', $users);
}
in your view:
#if(count($users) < 1)
...
#else
...
#endif
count is validating if the $users array length is less then 1 (in other words if the array is empty).
Alternative you can you isEmpty()
#if($users->isEmpty())
...
#else
...
#endif