Second controller not reacting

question

Hey guys! I just installed Bazzite in Deck Mode on my Mini-PC. I just want to play some light games im local multiplayer. However the second controller is not reacting. I connected via USB dongle and tried direct cable connection as well. The controller's light is also visible (like with controller 1) but in every game where I have to 'Press button A to add second player" nothing is happening.