Hello I already had my codes checked it was p0301 n p0440 help on 2002 Chevrolet Malibu

My car hesitates when pressing gas, car starts n shuts down at stop signs, also wheel n brake becomes stiff as in hard to turn n brake depress hard as well

Asked by for the 2002 Chevrolet Malibu
You have these problems: Misfire on cylinnder # 1! Defective or loose gas cap! Large vacuum leak! Seek a mechanc for repairs!