Nginx domain call root subdomain in multiple server

nginx config multiple server with ssl my server_name example.com read root from server_name admin.example.com

code
server {
    listen      80;
    listen 433 ssl;
    ssl         on;
    ssl_certificate         /etc/ssl/certs/cert.pem;
    ssl_certificate_key     /etc/ssl/private/key.pem;
    server_name example.com www.example.com;
    root /var/www/html/example/dist;
    location / {
      try_files $uri $uri/ /index.html;
    } 
}

server {
    listen      80;
    listen 433 ssl;
    ssl         on;
    ssl_certificate         /etc/ssl/certs/cert.pem;
    ssl_certificate_key     /etc/ssl/private/key.pem;
    server_name admin.example.com www.admin.example.com;
    root /var/www/html/admin-example/dist;
    location / {
      try_files $uri $uri/ /index.html;
    } 
}