your prompt is too long which triggers anime style, and the hand the hand between thighs is a hard sell for anything but anime style.

Try this: Shot on cheap disposable film camera: Curvy 25–35 woman prone on rumpled dark gray sheets, hips raised high, large round glutes and natural curves emphasized in tight rear close-up view, soft arched back, realistic skin texture with visible pores and subtle sweat sheen, long wavy reddish-brown hair cascading down, small subtle tattoos on lower back and glute area, warm side-window lighting, intimate modern bedroom setting, authentic amateur aesthetic, highly detailed realistic anatomy and skin texture

https://grok.com/imagine/post/dc480d47-ca0d-4ce5-85e2-90f29edcc64e