Fun facts about Telegram:
* has its own shitcoin
* is not end to end encrypted by default
* doesn’t support encrypted group chats
* is Russian owned
* is centralized
Nostr holds the promise of being an alternative, but in the meantime, I recommend checking out the matrix protocol: https://matrix.org/
One good client for it is https://element.io/
“But what about Signal?”
Signal is okay, and a better alternative to a lot of chat apps but it’s centralized, and has privacy issues (you have to sign up with a phone number). Its creator Moxie doesn’t seem to think decentralization is a good idea (in general) and expresses his views at length here: https://youtu.be/Nj3YFprqAr8
