For acromion fractures, is it better to wear a triangle bandage or a figure-eight bandage?

This situation is a fracture. It mainly depends on the degree of the fracture and whether there is joint instability. It cannot be treated casually with a figure-eight bandage and suspension fixation. You should first take a look at the radiographs and check the function of the joints. If surgery is not required, it is generally not a big problem. But generally the suspension fixation should not be reliable.