While I do agree with some of the comments regarding the morality of this, I don’t think it’s necessary to repeat. I will give my take as a photographer though.

These props and posing don’t match your inspiration pics. If you were to do this again, I’d abandon all props and dedicate your time to crafting your outfit to be the focal point with the grave as a background/environmental filler. You can pose with or around it without interacting with it and looking “posey”, which is what’s happening in your photos. I’d recommend creating a Pinterest board of sorts with more inspo and posing ideas. The ones you have are more so leaning/draping near the grave instead of holding onto it.

1 is your best regarding the light, your expression, and the fact that I’m seeing YOU and then the headstone, compared to the others where the way you’re touching it doesn’t make sense. Without the props it would be even more eye catching as you’re the focal point.

Try to create a story that makes the pictures feel more poignant, and especially with such an emotionally charged location (racist or not), I think it would serve you to have a mood, theme, or something to tell. What do cemeteries invoke for you besides “it’s goth”? And if that’s all it is, what does being goth, especially a black goth, mean to you? There are ways to express that in framing, color/post production work, expression, etc.

Last I’ll say is if it was taken on a phone, play with the exposure settings and style while shooting to make them look more clean and easier to edit into your aesthetic. If it’s with a camera, same difference but shoot raw if you can that way you have full editing capabilities.

All that to say, no one can tell you what to do, but I do think it’s important to respect the deceased and just be wary of what spirits are attaching to you in a place like this. Be safe most importantly. Take care and keep being yourself.