Have you considered using a mesh VPN instead of opening a port to the public? Nebula and TailScale are both great options that have a free tier which is more than enough for most home use cases. With Nebula you can even selfhost your discovery node so nothing is cloud-based, but then you’re back to opening firewall ports again.

Anyway, its going to be more secure than even a properly configured reverse proxy setup and way less hassle.

Macabre Stardew Valley is the game I didn’t know I was looking for. Thanks!