> When I’ve tried dark mode I had a big issue when the contrast. Everything became harder to discern, which I found more difficult for my eyes.

Interesting how experiences differ. I've found dark mode contrast to generally be a bit better than that of light mode because for some reason designers tend to employ a wider spread of colors with a higher delta between the lightest and darkest in those, whereas light mode themes tend to be stark white and two grays tops with those grays barely getting used at all.

So for example it's common for group boxes in dark mode to get a dedicated background color where under light mode they won't have a background and all and fall through the the parent's white background, causing content to all kind of blur together.