If you are afraid to talk to your parents directly, you can talk to your immediate family indirectly, such as your brother, sister, aunt, etc. They can play the role of mediation in the middle, and find opportunities to talk to your parents directly. For example, when your parents are around, you should explain clearly why you owe money, the amount, how much you have paid back, how much you are overdue and your repayment plan. Never hide it. In this way, parents will know something about your situation and will probably try to help you tide over the difficulties.
In addition to confessing to your family, it is more important to rely on your own efforts. Those who have bad habits should quit as soon as possible and work hard to make money. Don't think that you can sit back and relax and let your parents help you bear the debt. You should also have goals and plans and carry them out by yourself.