How to arrange the basketball double elimination match of the 13th team?

In the first round, in pairs, the first team had a bye. Winner group 7, loser group 6. In the second round, the winners are in pairs, one team has a bye, and the four teams stay in the winner group. The loser group plays, and the third team stays in the loser group. In the third round, the winner group had a bye, and there were four teams. In the final round, the winner played against the loser, and the winner stayed in the loser and the third team. In the fourth round, the winners are in pairs, the winners stay in the winners' group, two teams, and the losers are in pairs. One team is bye, and the remaining two teams. In the fifth round, the winner has a goodbye, team two. The winner of the last round played against the loser of the last round, and the winner stayed in the loser group, team 2. In the sixth round, the winner will decide the champion and the loser will match. The winner stays in the loser group, 1 team. In the seventh round, the winner of the last round and the loser of the last round decide the winner of the loser group. In the eighth round, the winner will be decided.