laravel @if or @isset show nothing or gives an exeption

I have made in laravel v.8. a database query (eloquent) that returns several columns.

$wgName = Auth::user()
            ->join('wg_groups', 'users.wg_group_id', '=', 'wg_groups.id')
            ->get();

Now I want in my html view that the wg_name is displayed if it is set.
I have tried the following four things:

@if(isset($wgName->wg_name))

    <h1>{{$wgName->wg_name}}</h1>

@endif

Here simply nothing is displayed

@if(isset($wgName))

    <h1>{{$wgName->wg_name}}</h1>

@endif

Exception: Property [wg_name] does not exist on this collection instance.

@isset($wgName)

    <h1>{{$wgName->wg_name}}</h1>

@endisset

Exception: Property [wg_name] does not exist on this collection instance.

@isset($wgName->wg_name)

    <h1>{{ $wgName->wg_name }}</h1>

@endisset

Here simply nothing is displayed

I have no idea why it doesn’t work and I didn’t find anything in the documentation.
https://laravel.com/docs/8.x/eloquent

>Solution :

Calling ->get() on Query builder will give you a Collection instance containing multiple users. And there is definitely no wg_name on Collection instance so the result is always false.

Try using first():

$wgName = Auth::user()
            ->join('wg_groups', 'users.wg_group_id', '=', 'wg_groups.id')
            ->first();