WhatsApp is the most used messager with 90%+ market penetration. It has more than a billion users globally. Snap is nowhere near that user base.
SnapChat has always looked like a solution to a "first world problem" to me. Very US and LA/NYC-centric.
Granted, I'm old, but even in rich European countries, I'm not sure it has potential to do well? (Honest question, I really wonder).