Lottos are usually zero-dte or weekly contracts far out-of-the-money, costing very little per contract with a small chance of an enormous multiple. The appeal is the payoff structure and the story, not the expected value.
Two things are worth knowing. The overwhelming majority expire worthless, which is what the pricing already says. And the attraction is a known distortion - probability-weighting makes small chances feel larger than they are - so the feeling that it is worth a shot is itself the thing being priced against you. If you buy them, treat the premium as spent on entry and size accordingly.
Related: zero-dte, probability-weighting, yolo, theta-gang