Floor plan - Where is the potential for optimization?

Finally, a reasonable house design. I’m getting eye strain from all the standard ones.

I have a few suggestions:
Attach the kitchen counter to the other wall for shorter paths.
In the basement, I would prefer if both children's rooms were next to each other or if the parent area was more distant. Swap K2 with the bedroom?
Or use the office as a bedroom?
If the bedroom stays there, then make the walk-in closet a bit larger. 50cm is enough.
In the bathroom: swap the toilet and the shower.
Have fun building!

The money spent on the architect was definitely worth it if the criticism focuses on the parking spaces for the garbage bin and "Tür zur Speis weglassen oder nicht?". I would leave out the door. Build walls flush with the countertop and have a nice shelf made by the carpenter. The floor plan does not give the impression that you have to put a 30 euro Swedish shelf in there for financial reasons. Nicely solved with the wide hallway on the sleeping level and the closets.