Please provide tips for designing the ground floor plan

The slanted wall with the door makes it a bit difficult, I think. You have squeezed the kitchen and dining area at the bottom, then there is a huge open space. I would rearrange that. Unfortunately, there are hardly any measurements in your plan. Is it your own design or is it already being built like this?

Hello ,
please fill out the questionnaire:
https://www.hausbau-forum.de/threads/grundrissplanung-unbedingt-vor-Beitrag-Erstellung-lesen.11714/
Also, provide the plot with site plan, streets, driveways, and everything that seems important.

Why 10.1 x 10.1m? Can this be deviated from? Can the straight staircase be replaced? What about the upper floor?

More tips are given for complete requests.

You spend a lot of money on "empty" space and at the same time it is cramped in the kitchen and hallway. For that reason alone, I do not like the design. If you need the large space in the living room for something, it can make sense. Maybe you give yoga classes at home.

Strange: at least the "green" template in was once a bit better. By the way, I currently advise laypeople to start with the upper floor. You wrote elsewhere that the development plan requires a house axis (?) - so why do you insist on a square floor plan?

You spend a lot of money on "empty" space and at the same time it gets cramped in the kitchen and hallway. For that reason alone, I don't like the design. If you need the large living room space for something, it can make sense. Maybe you give yoga classes at home.

that's why the OP is here. He writes that he doesn't like it.
I see a typical standard floor plan here. But you don't have to choose it. There are so many others. You can easily find inspiration online.
It's not even worth discussing. Next, we'll discuss the House of Nikolaus.

I see a typical standard floor plan here.

I rather see a builder who, at the sight of a standard floor plan, thought: "I can still botch this myself even worse." Basically the sorcerer's apprentice edition of run-of-the-mill.