What should I do if I take advantage of my position to use the deposit collected by the company and can't get it now?

Judging from your written description, you haven't fully realized the seriousness of the problem, so you still feel sorry for it and have a feeling of defending yourself. In fact, this problem is very serious: it is occupation and misappropriation of public funds, and the amount is huge. If the unit calls the police, you will be in big trouble and sentenced to several years in prison. If you really want to be sentenced, it will have a great impact on you, and even you will continue to pay for it for the rest of your life. You are young, and your life has just begun. Being sentenced for tens of thousands of dollars is not worth the candle. The unit has done its best for you. If you don't call the police right away, it is the greatest tolerance for you. Can't live up to the leadership of the unit. Therefore, your top priority is to borrow money to pay off debts, whether it is family, friends or classmates, even if you borrow usury, it is better than being sentenced. I hope you can understand, don't do anything stupid!