Is there a better way to get people to pay back the money?

You should first investigate whether this friend of your father has the ability to pay back the money! If there is, this money is easy to earn! If not, it's no use going. You find a friend of your father's who is also a friend, and ask clearly. Now you are a mistress asking for money from your elders, and your weapon is crying for poverty! You find an uncle or aunt in the middle. If your father lends money to your uncle, you can easily find your aunt. Tell your aunt first that life is not easy now that Dad is gone, and you have to bear the burden at home, so that you can comfort your mother when she is psychologically sad. The money that uncle or aunt owes his father. I hope she can help give that person a message, pity you. In a word, it's hard for you. Let Aunt help you out. They are old friends and can talk directly. If you can't find such a person, ask someone else for money. Remember to bring some fruit or something. After all, he is an elder. Then you talked about the difficulties in life, and then you said to see if it was convenient to return the money to you. Not once, don't lose heart, go again until he pays you back. Sometimes if you want money, you have to have the spirit of perseverance, otherwise the money you lend is the same as the water you spill. Good luck.