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They play very shrewdly. Day before yesterday I got a message from an unknown number on WhatsApp, like if I know someone. Out of curiosity I replied who's this?

After a few hours I got a message that I won a prize 🏆, contact blah blah.

I don't understand why don't they spend their time, constructively.

They only need a very few suckers to make it worth their while.

Exactly. It’s a numbers game for them, just a handful of replies can make the scam worth it.

because it obviously still works here and there …

Yeah, that "You won a prize" -scam is so old... but they do come up with more cunning ways