What you can do is, if you are getting a raw file from Telegram, first upload it to Google Drive and then use the URL that you obtain from there in your Notion Module.
Not that familiar with Telegram, so I am not sure if you can get the URL from Telegram BOT unless you have a custom bot that I can trigger a script to do so.
For, Now Uploading somewhere and then getting the URL is the only way forward for this.