“I literally do not know how to study.”
Studying is a problem for many students, especially if they’ve always done well enough school simply by doing the readings, the homework, and paying basic attention in class. Different people hit their personal wall at different times. Some people never do because they avoid classes they are not certain of succeeding at, or they lower their expectations rather than raising their efforts. The truth is, all of that is fine. It’s OK to avoid challenges; it’s OK to seek them.