There is nothing good about Telegram. I don’t know why it’s being pushed as a “privacy” respecting app. It literally requires a phone number to sign up. It requires you to agree to their terms, which are sketchy, and their transparency is lacking. You’re better off using an app like Briar, Element or equivalent (for Matrix), or Session. The end goal is to have a standardized E2EE setup that isn’t opt-in and that doesn’t come with sketchy NFT usernames (…seriously, why?).
I have taken a deep dive into Telegram. I cannot find a single thread of good behind using it, not when the apps I mentioned above—even with fewer features—have far better privacy and security, They can be thrown away. You can create multiple accounts and access them using Tor. Unlike your phone number, which is certainly connected to your name or other data.