I have to echo what many have said: If you cannot get a good picture with the least expensive DLSR or mirrorless camera on the market, you won't do any better with the best of the best.
People like the latest and greatest, when they need to be spending time learning the skills and practicing. It only takes a few minutes, three or four times a week, to learn a new skillset. Pick up your camera and shoot some pictures.
When you get to the point where your gear is actualy holding you back, you will know it.