Did people lose money with the collapse of FTX?

I'm sorry to hear about the collapse of FTX. As a professional practitioner in the field of cryptocurrency and finance, I'm sure many people are wondering if they lost money as a result of this event. Could you please provide some insights into the situation? Did investors who had their assets on FTX lose money? And if so, what are the potential reasons for this collapse? Could it have been prevented? I'm interested in hearing your thoughts on this matter. Thank you.