I'm new to XBOX 360 World and need to ask .. . . .. .

I have a modified or flashed xbox 360 elite .. i have bought 20 discs dvd r dl which called BENQ but it has a very low quality.. anyways i tried to burn games most of them failed, i burned far cry 4 .. 4 times and none worked saying that is region code is incorret.. and its region free and my console is PAL .. and call of duty black ops 2 wont read it gives me Open tray message, also wwe2k15 gives me this disc is not supported as pes 15 .
fifa 15 and destiny only worked well, i have a...

I'm new to XBOX 360 World and need to ask .. . . .. .