Beware of under-exposing, it's very easily done if you try to use manual.
Leave it on Auto and adjust the EV in most situations.
Also the sharpening seems too strong at first and most go to -1 or -2, however this seems to automatically apply something more like aggressive noise reduction? - try to put up with it on zero and add a slight Gaussian blur later when editing if artefacts are annoying.
I see Art Mode is back in latest IOS app, it will be in next Android version shortly.
This is definitely the best choice if you like to tweak things later.
If not the D-Cinelike is probably best bet contrast and saturation on -1
There's some suggestions the painted look is like a 'stuck' NR setting and a camera reset will put things back to default.
Make sure the focus is locked on a contrasty point too.