Prevent Browser back button after logout. Throwing Error

Hello. I am working with Laravel 8 and wanted a way to prevent users from hitting the back button after logout and thus re-entering the dashboard. I am using a middleware called preventBackHistory and it is working great. However, because I am wipping the session, the role no longer exists and I am ending up on a page that returns null. What I am trying to do is if there is no role or I get some kind of null value, that I am redirected to my view.errors.404 page. So far, I am not clear on what needs to be done to make this happen. So, in my Home controller, I am running the following check in my index method:

public function index() {
        dd(Auth::user());
        $role = Auth::user()->role;
        if($role == 1) {
            return view('admin.index');
        } elseif($role == 0) {
            return view('user.index');
        } else { 
            return view('errors.404');
        }
    }

my redirects route calling my index method is as follows:

Route::get('redirects', [HomeController::class, 'index']);

and when I hit the back button, my browser is taking me to http://127.0.0.1:8000/redirects and when doing a dd on the value of Augh::user(); I obviously get null.

Can anyone help me come up with a better solution to handle what I am trying to do? I would certainly appreicate it. Thank you in advance.