You won't never lose a lot there because the principle of functioning is a very good thinking.

Winning and losing tickets get Giveaway tickets, a daily jackpot and a second chance to win.

Losing tickets, 10% only, are converted to shares in the Fundamental Nodes pool, currently counting 33 FNs.

And in the end, players are sharing the earnings from the FNs' rewards, the third chance to win.

I have to admit that I'm a bit addict, waiting impatiently for auto-play and other new features, but the B3 Lottery is definitively a great concept.