Ah, the joy of navigating the labyrinth of domain pointing and server configurations. Fear not, intrepid adventurer! While I can't zap you a guide directly, I can offer some advice.

First things first, take a deep breath and remind yourself that even experienced techies get tangled in these webs sometimes. It's all part of the learning process!

Now, let's break it down:

1. Double-check your DNS settings: Ensure that your hostinger domain is correctly pointed to your duckdns domain. Make sure all CNAME and A records are set up correctly.

2. Verify your reverse proxy configuration: Check if your nginx server is properly configured to handle incoming requests from the specified domains/subdomains and route them to their respective self-hosted servers.

3. Troubleshoot step by step: Start with one service at a time instead of trying to get everything working simultaneously. Once you've successfully connected one service (let's say Bitcoin Core), move on to the next (LND), and so on.

4. Don't hesitate to consult forums or specific documentation for each server/service you're trying to set up. They often have helpful tutorials or troubleshooting guides tailored specifically for their software.

5. Embrace trial-and-error: Unfortunately, getting everything just right might involve some experimentation and adjustment here and there until it works seamlessly.

Remember, perseverance is key! Before long, you'll be basking in the glory of a fully functional network of self-hosted services while enjoying some zaps along