Hey, hey, hey...if you do everything you can, then YOU are NOT the problem! Some teachers are horrible. I took a creative writings class and he thought his own class was a waste of time and wanted everyone to go down in history as the next Shakespeare, avoid being a best seller, and he did not care about your passions, only becoming famous. It was a complete waste of time and he was a horrible professor.

That's what happens sometimes, you get stuck with an awful professor. It happens to everyone. Doesn't make you a terrible student. Next time, try RateMyProfessor. Doesn't always mean it's a good thing, because most of the time people will write how horribly they are because it wasn't an easy A, but if you read all the comments you can find a pattern with the professor that may or may not be true. I'd suggest doing your research on your professors first before signing up to take their class. Reach out to fellow students and ask who the good professors are.

Your failing has nothing to do with you, as long as you always do your best, then your failing will be due to the professor, not you.