Originally Posted by ahmed_as8
Do you mean that I must add more fonts ? What about locale too I can see its en_US
Set the locale to your locale, not en_US, which is certainly wrong.
After a Google search, I think maybe "ar_EG" is the right locale for your location. But there is still the issue of fonts. During a typical modern Linux installation, the installer offers many foreign support packages. If you selected the Arabic one, then you should be all right and the locale change will be enough to get things working.