Am I the only one who thinks College Calculus is near-impossible?

I just finished taking an exam for Calculus and man I gotta say I've never studied so much in my life and STILL did not feel like I did very good on the exam.

I mean Algebra was pretty alright, nothing *too* difficult, but man Calculus just destroys me. I bombed my first test and I gotta pass this one so I spent like 3 days in a row studying all day and still the test took me by surprise.

I don't know lol is this like a universally accepted thing that Calculus is just insanely difficult, or am I missing something here?

If anyone is wondering, this test was mostly based on derivatives by the power/product/quotient/chain rule, and implicit differentiation plus some other BS stuff thrown in there.