For best outputs:

Sampler: DPM++ 2M Karras / DPM++ 2M

Steps: 40 ~ 60, cfg 4 ~ 5.5, CLIP skip 2.

VAE: sdxl_vae

Neg: "blurry, blurred, amateur, ugly, low quality, sketch, low resolution, warped, crooked, deformed, cartoony, low detail, long street, (rounded architecture:0.5), text, watermark, low-quality, signature, moir pattern, downsampling, aliasing, distorted, blurry, glossy, blur, jpeg artifacts, compression artifacts, poorly drawn, low-resolution, bad, distortion, twisted, excessive, exaggerated pose, exaggerated limbs, grainy, symmetrical, duplicate, error, pattern, beginner, pixelated, fake, hyper, glitch, overexposed, high-contrast, bad-contrast, yellow eyes, arnold signature"

No realism needed for the pos, but using them is always an option.