a explain email for academic advising

I need the teacher to help me revise this letter of explanation，

This email is about me explaining why I cancelled all the courses last semester

Good communication with professors or instructors,

This is my first draft

I am sorry that I just saw your email a few days ago, so I have checked that the online booking time can only be after March 16th. Therefore, I hope to make some explanations in the email about the reason why I canceled the course selection last semester As a new student, I did n’t know much about course selection as a new student. I hurriedly chose 3 courses a week before the start of the school. As an international student, since the university professor’s speaking speed is significantly faster than the language school teacher, During the first two weeks of school, I was in a state of confusion. This is especially reflected in the 1281 management course. For a long time, I need to study this course by comparing the class notes and recordings. The confusion is also manifested in the computer course is the part of the program name and details in excel, because as long as you miss a program, you will not be able to run other programs. Before the time came to the mid-term exam,