Should you be playing with a mouse, use the keyboard to click, and the mouse to aim. That’ll probably prevent you from making sudden jerks while firing, and you might click faster with the keyboard than the mouse.
This is just something you can try though, not something that you MUST do. This is not supposed to make you a instant professional either.
Tell me if it does help you though. Have a good one.
I don’t really find myself moving because of clicking. Also even if you can shoot faster with the keyboard, all but one wea[pn have a cap, so it doesn’t matter that much. But I guess this is an option.