>>534751876
the matchmaking is that each time you get put with 2 other players, fully at random, with no conditions at all.
your odds are probably better than you think to get good rewards, because the first 2 rounds you get 8 attempts each, and the best result is just winning 3 of them while you only need to win 1 to get a fine result. since there's only 3 participants, most people can end up in Group A at the same time. Technically some people will fail in Round 1 and 2, but with 8 attempts and only needing 1 success to win and luck being a factor (they even have random moon) even a dogshit player has a reasonable chance. Anyone that's actually played and isn't submitting C rank trash is gonna be fine.
the final round is basically all RNG, you have exactly 1 attempt against 2 other people and winner takes all. the best player in the world can still lose if they end up blocked, though blocked odds are lower with only 9 racists.