First of all, I understand your troubles. Failing classes may not only have a negative impact on your studies, but also affect your confidence and mentality. However, as an international student guidance teacher, I think that failing the course is not an absolute mistake or a disastrous experience, but it can provide you with valuable opportunities for reflection and growth.

So, how should we deal with failing the exam? Here are some of my suggestions:

1. Understand the root of the problem: You mentioned that teachers' irresponsibility and failing exams are the main reasons for failing the course, so you need to have a deep understanding and analysis of these problems. Communicate with teachers to understand their teaching ideas and expectations, and at the same time understand the teaching quality and difficulty of this course. Sometimes, you can better understand the content by seeking the guidance of your tutor or other teachers.

2. Make a personal study plan: If you find that you are not solid enough in some aspects, you can make up for your lack of knowledge through your own efforts and study plan. Make a personal study plan, arrange daily study tasks, abide by your own plan, and gradually improve your ability.

3. Attend remedial classes and lectures: Many universities will provide additional academic remedial classes and lectures to help students better understand the course content. Participating in these courses and lectures can provide you with more information and knowledge about the courses, and at the same time, you can communicate with other students, learn from each other and support each other.

4. Cooperative learning with classmates: In college, learning and supporting each other with classmates is an important part. Forming a group with classmates and drafting documents can help you better understand the key points of the course and improve your oral and written expression skills.

5. Do better in the exam: Finally, if you really fail, don't despair. First of all, through reflection, I know what I need to improve and prepare for the next exam. Secondly, improve in the next exam and follow the key steps and skills in the answering process.

In short, you can learn to cope with and grow from all kinds of difficulties, although failing in the exam is not the result of your efforts. Trying the above suggestions and methods will be helpful to your academic and personal growth.