How far east are you?
I'm from the Czech Republic and often spend time Poland. No one I know forces me to use WA or Telegram, everyone's either on G Hangouts or FB messenger.
You couldn't be more wrong. I've lived in Czechia, Poland, the Netherlands, and the UK. I've played go competitively at a European level and have travelled a fair bit and socialized with nerds all over. Name a European country, chances are I know several people there.
SMS/iMessage is always everybody's first choice for communication here, i wouldn't say whatsapp is the dominant communication platform or used for in-country communication on a regular basis, but everybody seems to always have it installed or if they don't have it installed they know about it and are willing to install it.