Do you have any suggestions on how to do that? The People I know either think Whatsapp is gods gift to mankind and won't switch or they can't use anything else because the people they interact with think it's gods gift to mankind and won't switch. I find it pretty hard to break that cycle.
Versus that ridiculous hack where you can whatsapp in the browser, provided you scan a qr code and have the phone on the same network.
This totally speaks to me but I imagine saying to my buddies at the club: "You should use Telegram. It's free, you don't need an account, and best of all there is even a command line client.". That'll convince them right away. ;-)
For most people Telegram offers pretty good desktop clients (as opposed to the rather horrible WhatsApp web experience).
Can't say I've ever experienced that.
From there you just send them messages on Telegram, or start group chats. You likely won't convince them to switch themselves instantly, but if they want to message you, hopefully they're more likely to check telegram, because they'll want to get a better idea of when you were last available.
It's not perfect, but it's something, and hopefully if whatsapp keeps up with their paid subscription nonsense, it will push more people away.