In order to force redirection of your website developed in Laravel from HTTP to HTTPS, you can try adding the following rules in .htaccess file.

<fModule mod_rewrite.c> Options -Indexes RewriteEngine On

RewriteCond %{HTTPS} !=on RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

RewriteRule ^(.*)$ public/$1 [L] </IfModule>

Next, look at .env file and modify the value for APP_URL parameter APP_URL=https://yoursite.com