LG G3 recognizes only some buttons of my controller

So I bought myself today an otg cable to use it for some video game playing on my LG G3. I use a dongle to connect my (very) old PS1 controller to my phone. But when I want to play sth like Asphalt 8 or Modern Combat 5 nearly all my buttons (except the D-pad and analogs) are treated as one and the same button. I thought it was the fault of the dongle or controller so I connected another controller and got the same problem. The controllers work fine on my pc but the default mapping is somehow crazy (even in my launcher all buttons are like the same). Keyboard and mouse work fine. And my android version is 5.0 v20f. Can someone please help me.

Thank you.