I think I know why you are so unhappy with the majority of your cemetary photos - the weather was too nice for these to look anything like sombre. My one and only exploration of an old cemetary took place on a bright and sunny day, too, and afterwards I thought, boy, all those bright and shadowed parts. Bright parts blown out. Shadows all black.
But - this said, I think you chose a nice collection of six here, and the sun definitely helped you to get a good definition of details as shown in Photos 1 and 2, for example.
Photo 3 is very nicely composed, but you had to fight with the brightness of the angle's white in the sun, didn't you? You won! I say.
And then comes Photo 6, of course.
And that is ------------------------------- stunning.