To force your website to load with HTTPS in Laravel you can add the following code in your route/web.php file.

<?php

use Illuminate\Support\Facades\URL;

if(env('APP_ENV') == "production"){
    URL::forceScheme('https');
}

....
// Your routes here

It is a one of doing it, of course there are other ways to do so. You can add one in the comments below.