Would that be a good pc?

I use the following components:

CPU / GPU: AMD Ryzen 3 3200g

RAM: 8GB Ram Dual Channel 3200MHz

Motherboard: Gigabyte B450M DS3H V2

Storage: 1TB HDD

Power supply: be quiet! ATX 400w System Power 9 BN245 80Plus

I only want to play Fortnite, GTA 5 and Minecraft with it, would that work?

Well, the PC wouldn't even contain a GPU.

The question is, what do you need the pc for?

If you want to save money, wait a little longer. At the moment there's hardly any hardware for a PC at a good price.

How much should the box cost?

There's no SSD, unless you want to use Windows at retirement speed.

I want to play some games with it and use it for school.

It's good as an office PC, but it won't be enough for gaming. No dedicated card, "only" a Hdd, only 8GB ram

So 350 euro, don't want to spend more at the moment

Then I would only partially recommend the Pc…

You will definitely not be able to play games smoothly with it…

Since the required performance of the GPU (graphics card) is missing

Yes, the PC is sufficient for your requirements. In addition, you can easily retrofit a solid GPU later. 1080p low can also be played well with the APU. Only the RAM should be a bit more (16Gb);) In addition, a 120Gb SSD should already be included, at least for Windows…

Otherwise you can take it like that.

1080p Low is perfectly feasible in many games. The Ryzen APU is very strong for one of these.