PS4 controller does not work in Gta what do I have to do?

I tried to play Gta 5 with my Ps4 controller that I bought new. I connect my controller via a usb cable but it just doesn't want to connect. I also have other games such as Steep / Fortnite / etc. But only in GTA5 it does not connect. I have already used other cables but it really just doesn't work in gta.

GTA V does not support PS4 controllers on the PC.