laravel public folder is not showing anything in browser when i go to localhost/laravel3/public path

im in real trouble, i use the composser method to setup laravel on my ubuntu system. its install completely. but when i go to localhost/laravel3/public path it shows nothing, i thing there are some permission to folder problems. i also run following commands to change permissions of laravel3 directory.

 chmod -R 777 /var/www/html/laravel3
sudo chown ateeq:ateeq /var/www/html/laravel3/

when i run ls -l command on terminal it shows folliwng results on terminal for laravel3 directory.

drwxrwsr-x 12 ateeq ateeq        4096 اگست  30 19:02 laravel3

and it shows following results when i run ls -l command from laravel3 directory or inside of this project folder.

drwxrwsrwx  6 ateeq ateeq   4096 اگست  23 18:14 app
-rwxrwxrwx  1 ateeq ateeq   1646 اگست  23 18:14 artisan
drwxrwsrwx  3 ateeq ateeq   4096 اگست  23 18:14 bootstrap
-rwxrwxrwx  1 ateeq ateeq   1283 اگست  23 18:14 composer.json
-rwxrwxrwx  1 ateeq ateeq 123589 اگست  30 19:02 composer.lock
drwxrwsrwx  2 ateeq ateeq   4096 اگست  23 18:14 config
drwxrwsrwx  5 ateeq ateeq   4096 اگست  23 18:14 database
-rwxrwxrwx  1 ateeq ateeq    556 اگست  23 18:14 gulpfile.js
-rwxrwxrwx  1 ateeq ateeq    400 اگست  23 18:14 package.json
-rwxrwxrwx  1 ateeq ateeq    930 اگست  23 18:14 phpunit.xml
drwxrwsr-x  4 ateeq ateeq   4096 اگست  23 18:14 public
-rwxrwxrwx  1 ateeq ateeq   1918 اگست  23 18:14 readme.md
drwxrwsrwx  5 ateeq ateeq   4096 اگست  23 18:14 resources
drwxrwsrwx  2 ateeq ateeq   4096 اگست  23 18:14 routes
-rwxrwxrwx  1 ateeq ateeq    563 اگست  23 18:14 server.php
drwxrwsrwx  5 ateeq ateeq   4096 اگست  23 18:14 storage
drwxrwsrwx  2 ateeq ateeq   4096 اگست  23 18:14 tests
drwxrwsrwx 31 ateeq ateeq   4096 اگست  30 19:03 vendor

when i check owner of the laravel folder it show "me". and also for sub-folders inside laravel3 folders

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