when it comes to trust, once it's broken, it's very difficult to restore it or it takes a long time before you trust again, but in this situation, his parents are the ones who lost trust and if I were the parents in the situation, I would be really angry and lost of trust, maybe no matter what the child does, I will always think wrongly. Maybe the better thing to do is to return all the savings that were lost and just understand that there is a process to restore trust, others take a long time and reach many years before being able to completely forgive, so to make up for it, just show that you are sorry for what you did or maybe you should reduce the gambling because once they see you participating in such activity again, there is a greater chance that their lack of trust in you will increase.
I can try to recover some of the loss, for example, by returning all the money I lost when this happens to me. But it's important to realize that trust cannot be rebuilt overnight. The process of rebuilding trust is time-consuming; it can take years and often demands a significant commitment and effort from both sides.
One way to begin this journey is by demonstrating genuine remorse for your actions. Acknowledging your mistake and showing that you are genuinely sorry can go a long way in the recovery process. In addition, curtailing or quitting gambling altogether could serve as a positive step towards self-improvement. This demonstrates to your parents that you are serious about making amends for the past misdeeds and working towards a better future.
Yet it must be remembered that every individual and circumstance is unique, some individuals take longer than others to forgive and rebuild trust. It is crucial to persist and demonstrate patience, while also recognizing the significance of time and space in facilitating the healing journey.