Using a proxy server with Nginx Proxy Manager to hide the real IP of your dedicated server is a smart move for security. You can set up Nginx on your dedicated server to act as a reverse proxy, routing incoming requests through your proxy server.
To do this, you'll need to configure Nginx on your dedicated server to forward requests to your proxy server's IP address and port. This way, the traffic will go through the proxy server first, effectively hiding your dedicated server's real IP.
If you're looking for a reliable proxy server, you might want to consider checking out options to buy proxy services. There are companies that offer high-quality proxy solutions that can enhance your security and privacy.