Probably not the help you were looking for so far. For landscapes I use a higher megapixel camera and wider angle lens. You are not too concerned about autofocus system performance as you will be taking shots of mostly still subjects and not too concerned about low light performance as you will be using a tripod with longer exposures. I use a Nikon D850 45.7mp FF camera and either a Nikon 28mm f/1.8 or a Sigma 12-24mm f/4. The f/4 zoom is lighter and more compact than the f/2.8 version, which is part of the trinity, so it's easier to hike in with. Other good glass is a 35mm or 50mm f/1.8. Another good choice of camera is the Nikon D800E at 36.3mp. Sony, Canon and Fuji also make very good landscape cameras. With that said, you can get excellent results with lower mp cameras by stitching. You take slightly overlapping images of your landscape and stitch them together for a higher resolution images. This technique is especially useful for panoramas. Most cell phones have the ability to make panoramas in camera.
[ In addition to setting exposure, i.e., ISO, shutter speed, fstop, you need to be cognizant of the number of camera sensor elements you have on your subject. Along with the quality of the lens, the number of sensor elements determines the detail that can be captured. Note that detail is different from sharpness. Detail is a property of the captured image. Sharpness can be enhanced in Post Processing. ]
Although mirrorless is the way to the future, there are some great deals on used dslrs and glass as people are selling their gear and moving to mirrorless. My favorite place to shop for used gear is
KEH.com, which has a fair grading system, return policy, and warranty. If you have the budget, nice mirrorless cameras for landscapes are the Nikon Z7 or Z7ii, Canon R5, Sony A7R4 or Fuji GFX or X series cameras.
Good luck.