Instead of a Welcome to NGinx site, what should I do?

Question

Nginx

nginx.conf

user www-data;
worker_processes 4;
pid /run/nginx.pid;

events {
        worker_connections 768;
        # multi_accept on;
}

http {

        ##
        # Basic Settings
        ##

        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
       # server_name_in_redirect off;

        include /etc/nginx/mime.types;
        default_type application/octet-stream;

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;

        ##
        # Gzip Settings
        ##

        gzip on;
        gzip_disable "msie6";

        # gzip_vary on;
        # gzip_proxied any;
        # gzip_comp_level 6;
        # gzip_buffers 16 8k;
        # gzip_http_version 1.1;
        # gzip_types text/plain text/css application/json application/x-javascr$

        ##
        # nginx-naxsi config
        ##
        # Uncomment it if you installed nginx-naxsi
        ##

        #include /etc/nginx/naxsi_core.rules;

        ##
        # Virtual Host Configs
      ##

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
}


#mail {
#       # See sample authentication script at:
#       # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
#       # auth_http localhost/auth.php;
#       # pop3_capabilities "TOP" "USER";
#       # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
#       server {
#               listen     localhost:110;
#               protocol   pop3;
#               proxy      on;
#       }
#
#       server {
#               listen     localhost:143;
#               protocol   imap;
#               proxy      on;
#       }
# }

P.S.Где-то не может быть символов # потому что вырезал через nano

There is no /var/www folder. Data-www was not found.
Where does it get the Welcome to NGinx greeting from?
And where is the directory where the content of the site is located?

Answer 1

1) Stopped NGinx
2) Created the file /home/user/logs/nginx.access.log because NGinx got it missing
3) Restarted NGinx
4) PROFIT! Now it reads my index!
This instruction solves my problem and the problem with NGinx not starting because it cannot find the PID file!
That is, this instruction solves the following problems:
NGinx does not want to start

Answer 2

There is no /var/www folder. Data-www was not found.

So create the directory if it doesn't exist.
www-data (not Data-www) is the name of the group.
And what should it show if the content has not been created? Page from the package and shows.