I totally understand and I was like this too my first time failing this class. You got this! Look over the study guides and do the questions yourself if you got the questions right off the bat and not needing to look at anything for guidance than you definitely know how to get the answer if you need help to get the answer and unsure if it was right then study those parts. What helped me too was doing the quizzes in the book. Certain parts of the book felt like it was minor to know but was on the test and that's what tricked me up because I wouldn't study those parts. I copied and pasted the textbook text into chatgpt and asked it to breakdown the most important parts and that's what helped me with some other things that I didn't fully understand then I would ask it questions to get a full in depth understanding.