My dad has been missing for over 3 years.

In March 2023 my dad apparently went missing. It just something that happened completely out of nowhere. According to his bosses (since he worked two jobs) they said that he all of a sudden stop showing up to work which normally bosses don't go out of their way share this info with family members but considering that he has been a loyal employee to both of his jobs for years they felt that something was wrong. I'm the only family member who lived in the same state is he did, so a lot of the investigation stuff kind of fell on me since everyone else was too far away to really contribute to anything. It was a really rough time honestly because it was just non-stop gathering clues of what happened to him. If I wasn't at work, I was pretty much at his apartment. And once I got off of work, I would go to his apartment. Any medicine? Any notes from anyone? Any notes that he made himself? Any signs of suicide? Literally anything that could explain what happened to him. Eventually, the apartment that he was staying in had to be cleared because as a tenant, he wasn't paying rent or any of the bills so the landlords had to go through the eviction process which I didn't have to worry about since this is his apartment and not mine. Filed a police report and everything. Notice his car wasn't parked at the parking lot. Maybe he got into an accident or maybe he got kidnapped or something? I don't know. Even to this day I still don't know. Now three and a half years later, I still don't know anything. I still don't know what happened to him. I still don't know if he's even alive, but considering it's been this long he's probably not. At least when my mom passed away I eventually found out and got the confirmation I needed but with my dad I don't know you just disappeared which in many ways is worse than just dying you know what I mean? Had to share this because it's a thought that's been haunting me for a while.