Sorry ... first you have to install the Telegram App to Open the Link.
Telegram is just a Messenger Platform like discord, whatsapp, slack but Better in any way..

You can create BOTS on telegram to control your Raspberry, or Robotics..
that will prevent you from building a web page with user authentication to remotely control something..
it can be done from a Telegram BOT.

A while ago I had a telegram BOT to perform maintenance tasks on my servers, from there I gave him the order to delete temporary files and monitor memory usage etc. just like I was chatting with a BOT 😎