It lacks character/charm. I don’t want house will a million Knick knacks but I would expect to see some design flair in the furniture, art, rugs etc.
I would pay a professional to come in and give you a staging lesson/consult.
You need more plants around the windows of the exterior of the house. Picture one and two, you need to wow people. Put a moss/natural window box under the far right window and have it FILLED with spring Planting. Things that trails and things that are colourful.
Get 2 standard bay trees, potted by your front door. Big ones. The the 2 boxus in the green pots you can use them with other potted plants to cluster around the rear patio. Have a cloth on your patio table and dress it for an out door gathering.
Take the trampoline out for the pictures. Mow the lawn! Clear the patio tiles. Borrow a pressure washer. If you can dig out a flower bed you could...but to buy enough “mature” plants would be costly. But worth it.
You’re selling a house and at that price point a “lifestyle”.
Use a huge rug to break up the flooring in the lounge. White Berber style. La redoute is a good place. Also get some potted plants for the whole house and use a variety of neutral plant pots to hold them.
Main bathroom. Plants and fancy toiletries.
The bedroom on show. Change the bedding for white. And a neutral throw.
Consider repainting the kitchen. Ammonite farrow aNd ball is nice.
The interior decor looks functional and cold. You need to get some copies of Elle decor or Living Etc and copy!!
It’s needs lots of softer colours, and lots of plants and basically warm it/soften it up considerably.
Good luck!