That camera was sold as a kit with that lens... That camera was basically designed for that series of lenses... If it's not "focusing" you either have an incorrect setting and/or the lens/body is defective... Do the reset.. and start from scratch...
That lens has its own autofocus motor... The "P" in the model designation refers to "P" for "Pulse motor"...
You should probably do a Factory reset as suggested... https://www.techsolutions.support.com/how-to/how-to-factory-reset-a-nikon-d5600-camera-11053
This link should answer for your focus question.
This link should answer your question regarding the number of shutter actuations when you press the shutter release.
Actually, with the recent announcement of Nikon's new Z 26mm pancake lens, coupled with the Z30... The Z30 suddenly becomes a superior street camera... Harkening back to the older Film cameras of the 50s, 60s, and 70s...
For reference, the same NEF file (from my D810) is 36M and converted to DNG is 78M
Just for reference, you can convert a NEF directly within Lightroom from the Library menu with many more options than Adobe's DNG converter program... It converts the above 36M NEF file to a 39M DNG...
You can also just right-click on the image and select "search the web for image"... and Google will find similar images...with links to those images...
Yes...Using Lightroom and masking. First step is to Turn OFF any/all Noise reduction using the Noise/Sharpening panel... Second step is, using the Masking tools to select the areas of the image you want to apply noise reduction...then use the "noise" slider in the Mask over-lay to Reduce the...