With what messenger are you dreaming?

I use Telegram to chat with friends and for my work chats, but last month I am no longer satisfied with their work. All I want is to have privacy, a stable connection and some additional features, such as the cryptographic portfolio, for example, to do everything in one place. It will be my dream messenger.

Do you know any messenger who has everything at once and is worth trying?
And what is your dream messenger?