Enable port 443 on Linux Nginx

I'm trying to enable port 443 on Linux Nginx as I'm trying to install an SSL certificate. I've ran sudo lsof -i -P -n | grep LISTEN and got the following:

rpcbind   1751      rpc    8u  IPv4   15914      0t0  TCP *:111 (LISTEN)
rpcbind   1751      rpc   11u  IPv6   15917      0t0  TCP *:111 (LISTEN)
master    2172     root   13u  IPv4   17752      0t0  TCP 127.0.0.1:25 (LISTEN)
nginx     2264     root    6u  IPv4   19741      0t0  TCP *:80 (LISTEN)
nginx     2264     root    7u  IPv6   19742      0t0  TCP *:80 (LISTEN)
nginx     2265    nginx    6u  IPv4   19741      0t0  TCP *:80 (LISTEN)
nginx     2265    nginx    7u  IPv6   19742      0t0  TCP *:80 (LISTEN)
nginx     2266    nginx    6u  IPv4   19741      0t0  TCP *:80 (LISTEN)
nginx     2266    nginx    7u  IPv6   19742      0t0  TCP *:80 (LISTEN)
sshd      7640     root    3u  IPv4 1317041      0t0  TCP *:22 (LISTEN)
sshd      7640     root    4u  IPv6 1317050      0t0  TCP *:22 (LISTEN)

sudo netstat -tulpn | grep :443 doesn't give any result either.

I ran sudo iptables -I INPUT -p tcp -m tcp --dport 443 -j ACCEPT but this didn't work. I did not get any results after this command.

My server is running on AWS EC2 and my security group has HTTPS enabled, but I still have the same issue.

My nginx.conf looks like this. I've added settings for a TLS enabled server listening on port 443:

    server {
        listen       80;
        listen       [::]:80;
        server_name  _;
        location / {
                root /home/ec2-user;
                try_files $uri $uri/ /index.html;
#               add_header 'Access-Control-Allow-Origin' '*';

        }

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        error_page 404 /404.html;
        location = /404.html {
        }

        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
        }
    }

# Settings for a TLS enabled server.

   server {
       listen       443 ssl http2;
       listen       [::]:443 ssl http2;
       server_name  _;
       root         /home/ec2-user;

       ssl_certificate "/etc/pki/nginx/server.crt";
       ssl_certificate_key "/etc/pki/nginx/private/server.key";
       ssl_session_cache shared:SSL:1m;
       ssl_session_timeout  10m;
       ssl_ciphers PROFILE=SYSTEM;
       ssl_prefer_server_ciphers on;

       # Load configuration files for the default server block.
       include /etc/nginx/default.d/*.conf;

       error_page 404 /404.html;
          location = /40x.html {
       }

       error_page 500 502 503 504 /50x.html;
           location = /50x.html {
       }
   }