For simple problems use simple tools. I believe the simplest tunneling tool out there is https://pinggy.io . Tailscale is for a different use case. Not just exposing one port to the interenet.

or one of the many alternatives - https://github.com/anderspitman/awesome-tunneling. I will advocate for zrok.io as I work on its parent project, OpenZiti. zrok is open source and has a free (more generous and capable) SaaS than ngrok.