Clearly, a 50mm lens together with a full frame sensor does not match "the human field of vision." But the human field of vision includes central vision (what you're looking at) and peripheral vision, where you may be aware of movement or light or color, but which you can't really be said to "see" in any meaningful way. Try, for example, to read the words on the cover of a book or magazine that is more than a few degrees from the object you are directly looking at. The advantage of having such a wide field of vision is that our eye (brain, really) can become are of a change of light or a sense of movement in the peripheral area and pull the eye toward it so as to see what's really going on there.

Here's a little experiment I tried. I don't know if it has particular value, but I found it interesting. Look directly into the viewfinder of your camera with one eye. Now, with the other eye open and not obstructed, try to overlay what you see with each eye. If one eye sees the subject as larger or smaller, adjust your focal length until they match. For me, that seemed to be about 60mm using a FF sensor. Does that make any sense?

My sympathy for your frustration with Photoshop...

Perhaps it is time to switch to a modern buy and use photo editor not the rental like PS. Perhaps that is the update "girl" images is telling you to date that girl Sorry for your frustration with Adobe, I was stopped years ago by PS and its learning curve... Reflecting on my home car repair, a big box of expensive "Snapon Tools" far too expensive when utilitarian "Craftsman Tools" do all I want and need to fix my photos.

Photoshop is a program the discourages beginners from editing photos, it is excessively complicated. New approach is to have a good basic editor and AI plugins. This year AI is improving flamingly fast ... example NVIDIA's Canvas 360 which is free in its Beta form... some programs you will just use a microphone to tell it how to modify your photo. Eventually a Tesla Nuro-transplant will only require you to think. Film to Digital was a revolution, now editing is in a state of disruptive revolution. As in Cars, the OEMs editors like PS will be left in the dust by the new e-cars AI editors they ignored. Playing catch up is a hard path, hard to think in a new language ... PS will try; will they succeed?
NVIDIA Beta Canvas 360 link:
https://www.youtube.com/watch?v=GIlkWP7AKEs