This is one of the core usecases of cloudflared (https://github.com/cloudflare/cloudflared)! Without having a static IP address or dynamic DNS, you can establish a connection between your machine in a private network with Cloudflare. And once a resource is on the Cloudflare network, you can pretty much do anything with it, including routing your visitors to that server and using the full Cloudflare stack including its CDN, firewalls, and Anti-Bot protections.

This project does exactly the opposite of what the GP was talking about. We need to selfhost to be independent of Cloudflare, not dive even deeper into it. cloudflared exists to embrace and extinguish and absolutely fuck that and everything that comes from Cloudflare.