Bungalow floor plan ~16x9.5m (outside) on 1000m² with existing old building

"Logical" is often not actually so, but only seems to be due to erroneous assumptions. For example, it is not clear to me:

- Unfortunately, I don't really have 4 pages, the bungalow's orientation is fixed due to the existing building.

The light gray house at the bottom of the image is presumably going to be demolished (?) – how is the orientation of the new building determined?

you had not given any criticism of the overall system until now.

Correct: it was not clear to me before that you had only referred the previous criticism to the respective individual point and had not recognized the overall system (apart from your suffering from its complexity).

a floor plan does not give me a feeling at least because this is my first encounter with the topic of house construction.

Yes, apparently you no longer feel capable of more than cutting an area into spatial morsels. In this situation, it might be worth checking which of your conditions really lead to the respective derived restrictions.

I reduced the kitchen so that instead of a long row I can design an L with a kitchen island. I can make the WC small again and allocate the size to Kids' Room 1.

There is not just this or that...

Unfortunately, I don’t really have 4 sides. The bungalow’s orientation is fixed due to the existing building.

This bungalow has 4 sides. You are confused today

that the utility room should be in the north, especially with an exit to the yard/existing building

No, not necessarily. That’s why my question about where the supply lines come from. They should enter the house as short and unobstructed as possible. This is considered a repeat question!

Regarding the topic "Allraum", you mean the living room + kitchen?, the hallway is 1.80 m² wide and is identical to your idea, or am I missing something?

Uh... No! What is 1.80 for you? Exactly, the entrance.
But I am talking about the area in front of the Allraum. You have designed 3 different hallways now.
When I write about the area in front of the Allraum, I don’t mean the entrance area.

Has it already been said where the supply lines are coming from, and how big is the house now? 131 sqm?

Would you please answer that, @micric?
I would also be interested in the site plan, drawn. How wide and long is the plot? The old building remains. Is that yours? Is the office going in there? Do you still have options for storage there?

And what I wanted to get off my chest:
When I listed other wishes that might come, for example another kitchen island, that was actually a joke. In the initial post you didn’t even include a kitchen. And I wrote that with such wishes coming up afterwards, it’s very hard to get everything to fit together well.
And now there actually is planning with an island. That leaves me a bit stunned.

Has it already been said where the supply lines come from, and how big is the house now? 131 sqm?

Could you please answer that, @micric?

And what I also wanted to say:
When I listed what other wishes might come up, e.g., another kitchen island, that was actually a joke. In the initial post, you didn’t even draw a kitchen yet. And I wrote that with such wishes that come afterward, it’s hard to reconcile everything well.
And now they are actually planning with an island. I’m a bit stunned.

I have changed the south wing a bit again. Unfortunately, there is no proper TV corner anymore.

A completely different attempt, same external dimensions Walls are at 36.5): I was fed up with windows, but with west and east exits. Children's room in the south. As long as they are small, they can share a room, parents the other. Eventually, the parents will have to move and have a shower bath. Freezer separate from the pantry. You see, I can also do slanted walls where they are appropriate