السلام عليكم هذا يعتمد على الشخص نفسه ليس على اللغة

Like others, Arabs also write Arabic with their right hand. There are some exceptions. Some people write with their left hand all languages. I am a non-Arab, but I use my left hand to write Arabic. It was not by choice but by chance. Due to an accident, my right hand become inactive. I started to write with left hand. Still I write with it all other languages also, although my right hand is very active now and without any weakness.

As others have already said, it differs from person to person. But I would like to mention that Arabs don't usually use their left hand for doing stuff. The left hand is usually associated with unclean things, so when you shake someone's hand, or if you're eating, use your right hand. Otherwise people might get disgusted. Thanks for your intrest

At depends on the person :)

Simply without complications .. There is no exeption in that .. if i am right handed i will write with my right .. Like any other humans :)