Atari Thank you for your precious inputs.
1) May I ask how come you use your DS4 controller wired or wireless but with a dongle and not simply via bluetooth? I guess it is because there are issue via bluetooth?
The wired and dongle options are not a thing for me as I want something as easy as possible to setup and without any additional cluttering of the usb interfaces of the Raspberry Pi.
2) Out of curiosity, would I need a dongle for each DS4 I want to connect or one would be enough?
3) Do you have any experience with 8BitDo Pro 2 controllers? I have read very contrasting opinions, as people talking really well or bad about them.