Can you do something with the laptop?

Can someone tell me if the laptop is good for office. And whether you can possibly also play games such as Euro Truck Simulator 2 or something similar?

It's not good for gaming.

Far too expensive, there are better laptops for 399 euro

Far too expensive, and the parts are too old. An AMD A9 is no longer installed anywhere.

For the price of just an AMD A9? There are much better systems. Look for a laptop with Ryzen 5 or Ryzen 7.