Difficulty in writing join query in laravel5.3 controller - php

Question

I am developing a project in laravel 5.3. where I am using a users table and a points table in database. users are associated with transactions of points. these transections are recorded in points table. my points table looks like in my previous question who's link is this
-- I want to get user id in laravel 5.3 controller with Auth::user()->id but it creates error their --
. Now I am fetching users' all data in a page whare I want to show the net balance of there points too. you can see the result in image.image is here
so currently I am using the following code in controller.
public function users_list()
{
$ptitle = "Website Users";
$pdesc = "";
//$total_users = User::count();
$users = User::select('*')->orderby('created_at', 'desc')->get();
return view('admin.all-users-list',
['ptitle' => $ptitle,
'pdesc' => $pdesc,
'users' => $users,
'total_users' => $this->total_users,
]);
}
And getting result in view like following
<table class="table table-hover">
<tbody><tr>
<th>ID</th>
<th>User Name</th>
<th>Email</th>
<th>Country</th>
<th>Date</th>
<th>Points</th>
</tr>
<?php foreach ( $users as $u ){ ?>
<tr>
<td>{{ $u->id }}</td>
<td>{{ $u->user_name }}</td>
<td>{{ $u->email }}</td>
<td>{{ $u->country }}</td>
<td>{{ $u->created_at }}</td>
<td></td>
</tr>
<?php }?>
</tbody></table>
But I dont know how can i create a join in query builder to fetch net points for every user in list