( Not my Model )

https://civitai.com/models/2809346/085-in-the-shadows

This style backlights the subject and obscures part or all of their form in a dark shadow. It's a grainy black and white style reminiscent of film noir. It has a bias toward putting trees or foliage behind subjects if you don't specify another setting.

The trigger is "n0vuschr0ma style". If your subject isn't obscured enough, you can try adding something like "obscured by shadows" to your prompt.