Er...your arena doesn't have any luxury boxes.
Your attendance is controlled by: number of season ticket holders, ticket price, how well your team is doing (win record), how well your opponents are doing, your performance in TV games.
After you lost your TV game, your attendance went down for your next home game (the cup game). You won it, so your attendance jumped up again. Then you lost two in a row, so your next home gate was down. You won that game, lost a close one on the road and so your fans are happier.