How to setup a `.conf` file for Nginx?

Following tutorial : https://devdocs.magento.com/guides/v2.3/install-gde/composer.html

After download magento by using,

composer create-project --repository=https://repo.magento.com/ magento/project-community-edition=2.3.3 magento

Folder path : var/ww/html/magento

I am using centos 7 - Nginx how to run following last 2 commands,

find var generated vendor pub/static pub/media app/etc -type f -exec chmod g+w {} +
find var generated vendor pub/static pub/media app/etc -type d -exec chmod g+ws {} +
chown -R :www-data . # Ubuntu
chmod u+x bin/magento

Finally my installation command,

bin/magento setup:install
–base-url=http://127.0.0.1/magento
–db-host=localhost
–db-name=magento
–db-user=root
–db-password=P@ssword123
–admin-firstname=mage
–admin-lastname=mage
--admin-email=mage@gmail.com
–admin-user=mage
–admin-password=mage@123
–language=en_US
–currency=INR
–timezone=Asia/Kolkata
–use-rewrites=1

How to setup magento.conf in etc/nginx/config.d/ magento.conf?

my magento.conf :

upstream fastcgi_backend {
     server  127.0.0.1:9000;
 }

 server {

     listen 8085;
     server_name 192.168.1.65:8085;
     set $MAGE_ROOT /var/www/html/magento;
     include /var/www/html/magento/nginx.conf.sample;
 }

In url section if i type 192.168.1.65:8085 getting blank page.

FYI - After install magento 2.3.3 not created env.php file under \app\etc.