I have recently read an interesting essay on this topic, but it was already explained it to me a few years ago.
The thesis would consist that, although the probability of winning classical lotteries is near zero (typically between 0.0000007% in the case of Euromillions and 0.000003% in the case of national lotteries), people is willing to pay an excessive overprice because they are buying the right to dream about the possibility of winning.
Although there are extreme cases that get addicted to lotteries, this is quite uncommon if I'm not wrong, because, if you are not paying for the probability but for the possibility, a bet of 1 USD is enough to buy said possibility.
On the other hand, national lotteries are known to be "taxes on ignorance of mathematics", but if these revenues financed public expenses that revert to the common good: would you agree to pay systematically 1 USD more in your annual taxes as something that ensures the right to dream of a dear life of every taxpayer?
We participate in the lottery with everyone's dream. But lucky people are not necessarily rewarded, only lottery games are rewarded. You paid money to buy lottery make your dreams come true don't hurt anyone's dreams. Every person should keep separate money for winning lottery. I have seen many people who are not happy about winning the lottery because of the hassle of paying taxes. Yet people come forward to these ads and spend a dollar to change their fortunes to win the dream.