Telegram is giving away FREE Premium subscriptions! All they need from you is to use your cell phone as a relay to text out their OTP codes! And the recipient of the OTP sees your phone number! What could POSSIBLY go wrong with this deal?
PLEASE don’t use Telegram! I personally recommend Matrix as it’s totally FOSS, you can self host, there are tons of front end clients to choose from. Or even use Signal. I have my own issues with Signal, the fact they don’t allow third party clients, you can’t self-host, they have a proprietary shim in their stack that only they know what it does, they were pushing crypto, etc, but at least Signal is better than this garbage.
Signal and DeltaChat, as well as Simplex and some others e2e communication solutions, are adequate from a technical point of view.
The main issue is always adoption. You can have the most convenient way to safely communicate with people, it’ll be useless if nobody you’re talking to wants to use it.
So, since Signal is very easy to set up and use as well as the most adopted, it’s currently the best pick for regular conversations.