Floor plan Bungalow 172 m2 in Brandenburg south of Berlin

It also currently doesn’t seem to be the interior of the house that is a huge problem,

Now to the house itself.
The carport should/must be 5 meters from the property boundary. But it is not. According to the plan it is 4.44. The carport is already quite short at 4.89. If both vehicles are inside, you can’t just quickly get into the HAR, but have to reverse the vehicle.
If you want to create more space there, it comes at the expense of the bathroom window...
I would build the bike shed sideways so that you can still walk between the HAR and the shed. Otherwise, one-third of the shed would be useless because there are two doors there. The HAR must be inside the thermal envelope. The draftsman planned a special envelope there?! I would somehow avoid that.
Between the kitchen and the WC there is only a drywall for the connections... so the shower (what size is it?) would be in front of the window. The kitchen is compact but sufficient for one person. You do want an island, right?!
Then a dining table for 8 people... then "small seating options," which you can also call armchairs, at the top of the plan. In front of the passage to the living room... uh, media room, then also a chimney flue with a stove. The stove is between the passage and the bedroom door. So where are the armchairs supposed to be? In front of the stove, thus in front of the passage to the well-used living room, or in front of the terrace doors? I drew it and furnished it once... you can do it that way, cozy... I wouldn’t say so now. Rather snug and tight in depth with the dining table and terrace door, you would sit with some distance at the stove? Personally, I would have a problem with four armchairs there. Swivel armchairs would be good for the open view to the west as well as the stove in the east.
Utility garden in the north... that should rather be found by the kitchen (that’s exactly why it is a point in the questionnaire)
For a sightline from the entrance area, the nice straight line is given, but the view into the garden is then too far. However, the architect thought ahead and set the entrance door slightly in front of the wall because otherwise the sightline would go directly to the bedroom door. That is to be avoided.
Enough has already been said about the bathroom/bedroom situation. Also that guests can look into the bedroom if you want to enter the bathroom? Personally, I find it quite inspiring to look into the hosts’ sleeping quarters.
Nice that wants to show his little house. But you don’t want it exactly like that after your speech (family hallway included, including very compact dining area)
At you can see how to design the gable nicely open. I don’t know the rest.
From my experience (we also have it with the offset in the front): if possible, protect it on the west side, because that is where the wind comes from.