I have failed my university Calculus course twice already, despite earning a B+ in statistics and Math 101. What really bothers me is that fact that I seem to have no problem applying several principles of calculus when solving equations in physics, using CAD software for engineering, and calculating profit margins for my own business. The calculations seem to come naturally. However, when I take a calculus course, the lack of context, excessive jargon, and non-sensical assignment of variables makes me feel totally blind and retarded. No matter which professor teaches me, which website I look at, or which youtube videos I watch, they all explain it in the exact same fucking way. As if everyone who teaches calculus is an NPC programmed to only spew jargon without any context or explanation.

What is the secret to understanding calculus? Shortcuts, tip/tricks? Are the professors just using calc courses as a bottleneck to milk more shekels?