["I failed Introduction to Statistics class that I took as a summer class. I can't understand how i cannot even pass an introductory classes", 'Maybe you should take a different class.', 'The class is my part of required classes to take in order to graduate, not even an elective that I can just skip and never worry about']
You will have to study harder then.
I failed my Introduction to Statistics class and was very nervous of having to retake it again