Floor plan design for a new single-family house - 610 sqm plot - opinions welcome

Do you mean the upper study that is open to the hallway? That would be easy to separate (also later).

No, I mean the living room where the couch and the TV are located.

Can you send me the link once, preferably via pm if that's not so welcome here...

No. 1. You can only receive PMs after 150/200 posts, 2. the link is from a private group on FB and cannot be linked, and 3. it wasn’t good but only boring.
If you want more examples, you could browse through the previous discussions – some have this offset (garden, living room) and the central hallway with a side staircase.

Now I just have to see if I can fix them...

Honestly: now you have spent a lot of hours on this design and didn’t realize that nothing is load-bearing… then a hallway where the rooms are just lined up without really using any brainpower to design… the telescopic hallway should also immediately stand out… do you think you should anticipate the architect even if you have a nice program or options for visualization and can operate it?

sat down and didn’t realize that nothing supports

Calm down... Neither you nor I am a structural engineer. Besides a cast-in-place concrete ceiling, there are also secondary beams and girders that can carry non-load-bearing walls. In a purlin roof, besides the central purlins, the so-called ridge purlin also supports the roof. Thus, a load-bearing wall all the way up to the ridge is by no means necessary, but certainly no disadvantage.
I don’t concede anything here. Of course, I gladly take the opportunity to optimize.

Living room, where the couch and the TV are placed.

Why should anyone think of wanting to separate the rooms?

Telescoping corridor should also be noticed immediately…

What I notice is that right behind the front door I have a view all the way to the field; I by no means see that as a flaw but rather I like it very much.
I am nevertheless grateful for any ideas on how to be accessed otherwise from the front.
By the way, suggestions with a 1m or 1.2m corridor do not count.

Calm down...

I'm probably calmer than you ;) But why do you ask if you think you know better?

Why would anyone think of wanting to separate the rooms?

I never mentioned separation.

right behind the front door

Right behind the front door there is first a 7-meter hallway (telescope tube), then a door (probably glass door), then after several meters a fireplace, and behind the fireplace a wall.