How to Install Lightroom Presets on Mobile
Import a DNG preset once and reuse it on every photo, the exact taps, in order.

Phone cameras brighten shadows aggressively in software. When you then pull exposure down to create mood, you are darkening data that has already been flattened, so it turns muddy and grey instead of deep.
Leave exposure roughly where it is. Pull the shadows and black point down instead, then recover the subject with a radial mask. Mood should come from the frame, not from the whole image being dark.
Global saturation down reads as a dull photo. Drop only the colours competing with your subject, usually greens and yellows, and keep one accent alive.
Tip. In colour mix, minus 30 on green saturation does more for mood than minus 15 global.
Every moody image needs somewhere for the eye to rest: a sky patch, a window, a face. Without it the photo reads as underexposed rather than atmospheric.
Import a DNG preset once and reuse it on every photo, the exact taps, in order.
Split toning, curves and a little grain, the recipe behind the teal-and-orange look.
Clean cutouts around hair and edges, using the free tools only.