Configuring nginx config files in AWS elasticbeanstalk with .ebextensions not found

I am trying to enable https to my springboot webserver backend deployed on AWS elastic beanstalk with a self-signed SSL. I followed online tutorials and guides to change my nginx config with a new https-instance.config.

files:
  /etc/nginx/conf.d/myconf.conf:
    mode: "conf"
    owner: root
    group: root
    content: |
      # HTTPS server

      server {
        listen 443;
        server_name localhost;

        ssl on;
        ssl_certificate /etc/pki/tls/certs/server.crt;
        ssl_certificate_key /etc/pki/tls/certs/server.key;
        ssl_prefer_server_ciphers on;

        location / {
          proxy_pass  http://localhost:5000;
          proxy_http_version  1.1;
          proxy_set_header  Connection "";
          proxy_set_header  Host  $host;
          proxy_set_header  X-Real-IP  $remote_addr;
          proxy_set_header  X-Forwarded-For  $proxy_add_x_forwarded_for;
        }
      }

  /etc/pki/tls/certs/server.crt:
    mode: "000400"
    owner: root
    group: root
    content: |
      -----BEGIN CERTIFICATE-----
 mycert
      -----END CERTIFICATE-----
      
  /etc/pki/tls/certs/server.key:
    mode: "000400"
    owner: root
    group: root
    content: |
      -----BEGIN RSA PRIVATE KEY-----
mykey
      -----END RSA PRIVATE KEY-----

  /opt/elasticbeanstalk/hooks/appdeploy/post/03_restart_nginx.sh:
      mode: "000755"
      owner: root
      group: root
      content: |
        #!/usr/bin/env bash
        sudo service nginx restart

When I ssh to my instance I am unable to find my myconf.conf files under conf.d. Running service nginx status gives me

● nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; disabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/nginx.service.d
           └─nginx.conf
   Active: active (running) since Wed 2020-08-26 03:06:34 UTC; 15min ago
  Process: 28894 ExecStartPost=/bin/sh -c systemctl show -p MainPID nginx.service | cut -d= -f2 > /var/pids/nginx.pid (code=exited, status=0/SUCCESS)
  Process: 28890 ExecStart=/usr/sbin/nginx (code=exited, status=0/SUCCESS)
  Process: 28887 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS)
  Process: 28886 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS)
 Main PID: 28893 (nginx)
   CGroup: /system.slice/nginx.service
           ├─28893 nginx: master process /usr/sbin/nginx
           └─28897 nginx: worker process

Aug 26 03:06:34  systemd[1]: Starting The nginx HTTP and reverse proxy server...
Aug 26 03:06:34 nginx[28887]: nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
Aug 26 03:06:34  nginx[28887]: nginx: configuration file /etc/nginx/nginx.conf test is successful
Aug 26 03:06:34  systemd[1]: Started The nginx HTTP and reverse proxy server.

What am I missing out. This is my first project on AWS EBS.

Note: I am running the free tier single instance for EBS