Domain name - ip configuration

Hi,

I have very little experience in using nginx and this may be a trivial question. I have configured the NS records on my registrar’s site to use my domain for the site I’m hosting on DigitalOcean. On the DNS records on DigitalOcean there are 3 NS records and 1 A record that points to my IP as it does by default. I have also added an “A” record with “www” to point to same IP.

Now, when I open my IP on the browser I can see my site, however the domain names “example.com” and “www.example.com” show the “Welcome to nginx” page. I believe my domain points to the correct IP, but I think I am missing something in the nginx side. Any help is appreciated.

My sites-avalable/web_project contents:

server {
    listen 80;
    server_name 159.65.127.239;
    root /home/mehmet/project;
 
    location /static/ {
    }
 
    location /media/ {
    }
 
    location / {
        include proxy_params;
        proxy_pass http://unix:/home/mehmet/project/web_project.sock;
    }
}