any workaround of broken keycode detection on linux

I use the following code to detect currently pressed keyboard or mouse button. works flawessly for windows, but is broken on linux in non-english locales and always returns keycode.none for non-english letters. Any fix?

 public class NewBehaviourScript : MonoBehaviour {
 
     public Text textTesterLinux;
 
     void KK()
     {
         if (textTesterLinux == null) { return; }
 
         var pressedKeyCode = KeyCode.None;
         if (Input.anyKeyDown)
         {
             
             pressedKeyCode = FetchKey();
 
             if (pressedKeyCode != KeyCode.None)
             {
                 textTesterLinux.text = "keycode " + "{" + pressedKeyCode + "}" + " keycodeCODE " + "{" + (int)pressedKeyCode + "}";
             }
         }
     }
 
 
     KeyCode FetchKey()
     {
         foreach (KeyCode kk in Enum.GetValues(typeof(KeyCode)))
         {
             if (Input.GetKeyDown(kk))
             {
                 return kk;
             }
         }
 
         return KeyCode.None;
     }
     
     void Update () {
         KK();
     }
 }