Are you a fresh graduate? If it's fresh, you don't need any experience. It is mainly to be careful, cheerful and have a basic understanding of the bond market. Bond trading mainly depends on the accumulation of contacts, and entering this business will naturally accumulate.
But to be honest, a college diploma is really not dominant. Now fund companies have to recruit graduate students, unless you have experience. . .
Maybe some brokers or private equity firms will have a lower threshold. You can try.