The whole house looks immaculate to me, I am in awe and need lessons that would be so much more of an attraction to view, personally, than easily changed things like decor and a bit of preserver/paint on the garden fence.
I think you're trying to be nice and supportive, but I think the op is looking for some honesty so she can get her house sold. She's had no viewings.
I don't think thr house looks sterile, I'm surprised at the comment, and I think some good advice has been given in terms of what the issues could be. Making rhe fence a warmer less bright shade, adding some big out door plants, maybe trying to brighten the kitchen, using a different agent as well as understanding what could be putting people off to relook at price should be helpful
Advising the op not to drop the price due to the kitchen is maybe less so since the issue is she hasn't even had someone in to view, never mind make an offer.