Photoshop remove background failed error

The more serious problem is why it doesn't work in either case, completely regardless of contrast, colors and all other factors, and the Generative Fill tool (AI tools) doesn't work for me in a Windows 11 environment.

With the same images, with the same Cloud-based AI tools, everything works without problems on a Macbook (Apple Silicon).

So? Adobe of course doesn't give an answer to this either, we try to use workarounds, but it's ridiculous that the Windows version is so unstable (this is not my first problem with it, and probably not the last) compared to the MacOS one.

Why can't I remove a background from an image in Photoshop.  Its NOT loccked.  I put the imager into Adobe Express and its removed instantly,  but in Photoshop CC - NOTHING - fails every time -  WHY

Thank you both, i'll try those suggestions. I was hoping it wasn't an error with the software, so to test, I'll try an image with more contrast in the background to see if it's a software issue or the AI not being able to determine the subject.

Looks like there may not be enough distinction for Photoshop's AI to determine what to remove. Since you prefer something automated, and your original end result wouldn't create a layer mask - I'll provide a simple answer (if you ARE familiar with layer masks, Derek's answer is a cleaner option).

It may be better if you started it yourself, by making a loose selection with the lasso, of what you want to delete, and then delete it yourself (Please convert your layer before doing so, by double clicking the background layer and hitting ok). Once you get rid of some of the distraction in the background, the AI may have an easier time. 

Try Select > Subject, then apply a Layer Mask and fine tune, though looking at that pic, a selection made with the Pen tool might be better.