I suggest that the same number of seed players be divided into six groups and the rest be divided into six groups by drawing lots.
Playing the first round of group matches is 3*5*6=90 games, half of each group is eliminated, and 18 players are selected. The method of the three groups playing the second round is similar to that of the first round, so there will be 3*5*3=45 games, and each group can eliminate 3-4 people, leaving 9-6 people to play round robin. According to the points, 6 people will play round robin finals, with 3 * 5 = 15 games.
I hope the landlord is satisfied