Thank you very much for your detailed answer @zyx066

That shouldn't be any criticism, I just wanted to say that :-)
You're right, the space station slows down due to this and the attraction of the Earth so that it has to ignite its propulsion every now and then to maintain its speed and due to this its orbit.

You see that just right. Energy cannot be lost. It can only be changed or transmitted.

I wouldn't say right now that you cheated. That would be much too hard. Rather concealed, but in the sense of simplicity. :-)

In any case: Keep up your work! :-)