Good PC from Dubaro about 600 euro?

Is it good for gambling? Rocket League, Fortnite, Rainbow Six, … (All games work with my laptop)

Do you already have a graphics card?

The graphics card is AMD Vega 11

The processor has no graphics card.

I wouldn't buy it. What is the price limit?

650 euro - 700 euro

Then prefer the one here https://www.dubaro.de/GAMING-PC/AMD-Ryzen-GAMING-PC/Gamer-PC-Ryzen-5-2600-mit-RX580::3626.html

Without a graphics card, you won't have a picture
and the processor has no integrated graphics unit.

Better buy the PC: https://www.dubaro.de/GAMING-PC/HardwareDealz-Editionen/HardwareDealz-600-Edition::3690.html

You won't get very far without a graphics card. The Ryzen 5 3600 also doesn't have a Vega 11!
If something decent dedicated is built in, the setup is okay.