How should seven teams be divided into two groups in a basketball match?

The best way for seven teams is to play one round against each other, that is, the points match (if there is enough time, you can play two or three rounds), and then the four teams with the top points will play the elimination match, that is, the 1/4 match. Two teams that want to play 3.4 recently and lose 1/4 can also play a 3.4 game.