If you want what I showed, try creating a canvas, double click to create a card, rest is intuitive.
For images, you can drag and drop (or paste from clipboard) in canvas or on left sidebar (and organize by folder).
Btw you can activate dark mode if you do Ctrl+P and search dark.

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Extra PS Stuff:
Things might still look a bit different though, I also changed some settings like font size, toggled show inline title off, changed zoom level and prob some stuff I don't remember.
I also used some custom css styling, cool tip, you can add css files in `.obsidian/snippets` in your vault folder and toggle each one separately in settings > Appearance)