Hey man, no need to panic. All you have to do is, can you see the 'Alt' and 'Shift' on both of your keyboard sides? There are 2 on the left and 2 on the right. If you can see them that is nice. Can you see also the 'Ctrl' button too? There are 2 of them ... no depending on your laptop you have to do the following.
Press the 'Alt' button then while you keep pressing on it, press the 'Shift' button too. You are doing good, that is it.

1- Switch from Arabic To English [Press 'Alt'+'Shift' on left side of your keyboard]

2- Switch from English To Arabic [Press 'Alt'+'Shift' on right side of your keyboard]

3- sometimes the combination might be different, so do the same thing while you replace the 'Alt' button with 'Ctrl' in other words:

Switch from Arabic To English [Press 'Ctrl'+'Shift' on left side of your keyboard]

Switch from English To Arabic [Press 'Ctrl'+'Shift' on right side of your keyboard]

Good luck my friend.