Winners are chosen at random using Chainlink's VRF technology after the week. The winning addresses will get the Pool's interest, and their tickets will be refunded. Tickets from non-winning addresses will be returned, and the game will begin again. Smart contracts automate everything, so gamers won't have to repurchase tickets. They will be included in the weekly lottery drawings as long as they do not withdraw. And now you know why: none of the participants can lose any of their funds.