Breaking apart your sentence
From my point of view
you should go more slower than faster
is incorrect, as natives we are taught not to use "more" with "-er", more correct might be
you should drive slower rather than faster
you should drive more slowly than fast
you should drive more slowly
"drive" might be a better choice than the informal "go"
so, you will have time to steer the car
as pointed out, "steering" is to move the car to the left, right or straight ahead
under the examiner's instructions.
under the examiner's directions.
Regarding your one word for "moving the wheel left or right", one
turns the (steering) wheel
in order to steer the car left or right.