WoW!
Thank you man. I have tried a lot of ways, read a lot of articles about how to deploy laravel project on shared hosting, but nothing interesting.
But your simple way is the best.
Using kkhicher1 solution the .env file is exposed. If you go to your main domain and follow the path you can load the .env file for display in a browser. For example say your subdomain is blog.mytestsite.com and you main domain is www.mytestsite.com. If you enter in www.mytestsite.com/blog.mytestsite.com/.env the file will gladly open up and expose your database password and other settings.