Use the "one woman and two males" to force the correct number of persons.

Strength: 1.0-1.5
Better use my exact prompting.

a general NSFW lora at 0.3 strength can help.

Prompting:

one woman and two males. 

viewpoint from side, folded, legs up, the girl in the image has her legs are spread wide apart and held up. the man standing is penetrating her vagina while the other man's penis is penetrating her anus. her thong is pulled aside and exposes her vagina and anus. the faces of the two males are not in frame. girl is lying on bed with on one man. the man under her has his arms around her legs grabbing her head. girl is moaning and looking at viewer,