How to use @foreach on index page

It might help to share some of your code

Thanks, I got it.

Actually I was not clear about transferring the variable value on the homepage where you are not sending value through a link.

I knew it can be done using a controller but again it will have to make a link and transfer it.

Finally, I got this to make it happen. A small function on the route file.

Route::get('/', function () {
    $links = App\Link::paginate(8);
    return view('welcome', compact('links'));
});

And then I can use the @foreach loop on the homepage.

The error was "Undefined variable" for that particular variable I have used in foreach.

You can use partial view for that for example

@include('partials.list-of-posts', ['posts' => $posts, 'class' => 'your-class'])

where you pass $posts variable and inside that view you have foreach

@foreach ($posts as $post)
    //
@endforeach

So you just include it to your homepage and dashboard page.

Docs: https://laravel.com/docs/7.x/blade#including-subviews

two routes, two controllers, the same model query in each.

Common views can be shared as partials.

Try and avoid using closures - at least up until Laravel 8 - they prevent route file caching.