After all, you need to get the information. If that is too hard to do, hen you must find someone who has done well in the class and will tutor you in the material. If you prefer not to ask questions during class, you might consider talking to the professor immediately before or after class. You may find it less embarrassing, and you may find the professor less sarcastic and more responsive. If these times are inconvenient or if your questions are more complex, you should go to your professor's office hours.
All professors have a minimum of three hours per week scheduled for speaking with students.
My office hour are listed in this syllabus. Please stop by. All college majors have both required courses and elective courses. Sometimes deciding on which of these to take, and then actually getting registered for those classes seems like a continuous set of hurdles. Other students can provide really valuable information about which professors are easier, which are more interesting and which will really help you learn.