On my Z5 I can use the built-in Landscape mode, and on the Z6 I can use auto or manual.
Autocorrect RAW in Adobe Photoshop looks good. And certainly on a 4k monitor the DSLR images reveal more detail.
My post here has me realizing I need to take iPhone and DSLR shots side-by-side in the same place with the same lighting and begin to compare them in-camera and in post-processing.
"What aperture are you shooting at? You probably already know it, but for landscapes you'd be looking at f/5.6 or so unless you're hurting for light."
this is bad advice.... shoot on a tripod and set your f stop to get the DOF you need or do a focus stack, f/5.6 would work if your shooting a distant landscape but having anything in the foreground f5.6 would not be enough, i usually stay at around F10 any higher i don't like because diffraction starts to reduce image quality and if i need more DOF i just focus stack
for ISO set it to 100 or what ever your cameras base ISO is
then adjust your shutter speed until you get correct exposure
If you are using an APS-C camera or a FF above 30MP, at f/10 you are already suffering from diffraction. You really want to be between f/5.6 and f/8. Of course, composition is still the most important thing, so if you need the depth of field you need the depth field.
As for the exposure you can just use aperture priority with your ISO set to the base ISO. On a Nikon camera you'd actually want to be at 64. If the scene doesn't have challenging highlights then going under the base ISO or overexposing will provide even better results.
Actually if you shoot raw its not good to go below base iso. Recently i learned that when you go under base iso the camera just overexposes the image and pulls it down in software to give you longer exposure times. With raw you can just raise shadows in post, its easier than pulling lights down. Negative side effect is highlight blowing out easy when going below base iso. So if you shoot raw then just stay at base iso and raise shadows in post. And if you really need the longer exposure invest in a ND filter.
It depends on whether or not you have a lot of highlights. As you said it just overexposes the image, which you should do if you can get away with the highlights.
What aperture are you shooting at? You probably already know it, but for landscapes you'd be looking at f/5.6 or so unless you're hurting for light.
Popular notion is that at f/11 only will diffraction start to affect you, but with modern high resolution cameras diffraction starts to creep in as early as f/9, so f/5.6 is generally best unless you really need the deeper field. You're probably going to be fine at 24MP, though.