The lyrics can indeed be used to describe "bad fate". The lyrics, "like a self-centered repeat student, unable to complete the mission of winning the gold medal", expresses a situation where one encounters setbacks and difficulties in the process of pursuing one's goals, which can be interpreted as a manifestation of a bad fate.
And "Fate is not as arbitrary as guessing a rock-paper-scissors decision" expresses that fate is not arbitrary, not simply a game, but has an important influence on the development of life. This is also in line with the concept of "bad fate", that is, the path of life is not always smooth and will encounter various challenges and tests of fate.
As for the "not being able to be with the girl I like, not being able to do the job I like" you mentioned, these can be regarded as manifestations of bad fate. At different stages of life, we will encounter various setbacks and difficulties, and these can be changed through our own efforts and continuous learning and progress.
Overall, the lyrics of this song can indeed be used to describe "bad fate", which expresses the frustration and difficulties in life, and the important influence of fate on the development of life.
Even if you have a bad fate, you have to keep a positive mindset and courage. Believe in yourself, be firm in your goals, keep working hard, and eventually you will be able to overcome the difficulties and realize your dreams. Cheer up!