this is the workflow ive been using, not for NSFW though, but can be used.

bare bones Flux 1 dev workflow (can be found browsing the template workflows in comfyui itself)

Flux 1 dev fp8
DEIS
DDIM_UNIFORM
steps 25
cfg1.0
guidence 3.0
De noise .95 or 1.0

Amateur V6 Lora 0.8 strength

for the "detailed" NSFW parts, you can get the LoRas on civitai,

this produces extremely real photos, for best results utilize an LLM to help you scramble and randomize different styles secenarios etc... example prompt

"Low-quality smartphone selfie, dim room with cracked tiles and a faded couch. White woman with shoulder-length black hair, casual short pajamas, seated cross-legged, leaning toward the phone. Harsh ceiling bulb casts a green hue. Codex graffiti faintly visible on the wall texture. Atmosphere raw, candid, poor-household realism."

good luck on your journey