This.
I agree that you have a clash with your grey doors, white floor tiles and yellowish walls.
You MAY also have an issue with your yellow beige walls and your pink beige carpet ( I’m not sure from the photos as it’s artificial light ). Yellow beige and pink beige are ALWAYS horrible together.
My DD bought a new build flat with magnolia walls and pink beige carpet and everyone said “ oh these carpets are hideous, you will need to change them you couldn’t possibly live with them “.
But they were brand new and it would have been crazy expensive to rip them out. Once she worked that the problem was simply the clash between the two colours, she repainted all the walls in various warm neutral colours, similar to the cashmere/mushroom colours that people up thread have been recommending for you. It was a small flat , easy to paint herself, just the cost of the paint and a weekend doing it.
Then all her friends said “ Your place is totally transformed now you’ve changed the carpet “!
In our last house , we changed the internal doors ( which were builders grade nasty cheap white ones ) for oak veneer ones , with glazed panels on the kitchen and living room . This wasn’t cheap - about £200 a door for everything ( door/ hardware/ fitting by a joiner) . But we saved by oiling the doors and painting the walls and woodwork ourselves and it totally transformed the hall and stairs.
One very cheap change which my DD did in her flat was replacing the light fittings which had a single bulb for multi bulb fittings. Then she changed the light bulbs to warm white in the living area / bedroom / hall and kept the bright / cool white in the kitchen and bedroom.
That made a HUGE difference for the money spent.
Anyway back to you @RachyB86 . I can see why people are recommending a pink beige wall colour for you instead of yellow beige. But I’m concerned that might clash with the yellow beige in the wallpaper, so is a bit of a dilemma.
So @RachyB86 I would either put the wallpaper on all the walls ( I see you’ve tried to get some more). Or I’d paint the other walls in the background colour of the wallpaper.
Take the wallpaper with you to the store, get it matched, buy a sample pot, paint two coats on a one meter pice of lining paper and look at in all lights ( day / night ) and all parts of the room before deciding.
Now about the shade of green - I know posters here are referring to it as emerald, as that’s the name on the website. But it does seem to be a sage green colour online and nothing like emerald. Is that right?
The other thing than confuses me is that the wallpaper on some of your photos of the stairs looks more like the navy blue colour way of that same paper. Can I just double check that you have the same colour of paper in both parts of the hall AND that the colour is really a dull green grey colour and not actually emerald green ?
It wouldn’t be expensive get a new bit of carpet / doormat fitted at the front door that doesn’t clash with the rest of you hall decor ie not charcoal grey. Matting also comes in dark brown , which might work better.
I do sympathise with your decorating dilemma. Halls are hard to do well as there’s no furniture to distract the eye, often harsh overhead lighting and little daylight. I can see why you’ve gone for a bold wallpaper to give some interest and make a statement.