I agree those photos are dire and being brutal if I looked at picture one I'd click away to another house to look at.
OP you're right, familiarity breeds contempt they say, or, in other words you're not looking at the house as if you were a stranger so you're not seeing for yourself all the things that are being pointed out. To be fair, your Agent should be looking with fresh eyes and the main opportunities to make the most of what they're selling. I wouldn't let them use photos that didn't have my prior approval.
It looks like it was a dull day, but they hadn't bothered to put any lights or to do even the most basic editing of the prints (see attached) I don't even have a programme for photos, that was just done in 'Office' The photos are a major sales tool and they're just not doing that job.
In addition to what you've already been advised I'd say that some of those photos make the house look like a rental, a photo of all the locks on the front door, admirable for your security but not particularly engaging for a viewer, stickers on the washing machine and tumble dryer, the curtains rucked up, untidy garden and all the weeds along the fences, those things just say 'unloved' All the stuff on top of the kitchen cupboards suggest that there isn't enough storage, although I see from the written details that you have a larder cupboard. You're trying to sell a home and to convince someone else that it'll make a lovely home for them too. The photos need to say look at this, this is what you want.
Brighten up your bathroom with a nice potted fern or an orchid plant and some colourful liquid soap and towels, make sure there is an indication of the stand alone shower and have all the photos reshot on a much brighter day. Make sure the Agent only uses photos that show rooms and outside in the best possible way and give them a pep talk.
I know they can't always filter out complete time wasters, but I don't think it sounds like they're on their game at all.