Both. Different use cases.
Discussion
i know ive heard people say use signal for if your doing activist work. though ive also seen many use telegram for spreading information. im trying to discern whats good in terms of use among families and the like, cause a lot of people around me use whatsapp and so i have to use it as well even though I have telegram and its gonna be a struggle to move them to these other platforms.
Then replace WhatsApp with Signal. They're basically the same.
Telegram is better for large, anonymous groups.