I haven't had stuff stolen, but I have had a lot of problems especially with UPS.
They use to claim they had attempted delivery, and never even stopped by my place. Once I was sitting on the front porch at the exact same time that they stated they attempted delivery. Lol, I watched the truck drive down the street without even stopping.
Last Monday, I got a new PC delivered by Fed Ex, he left it at my apt. door and just knocked, no signature. Then on Wed, he knocks and I accept delivery also from Dell, but I had only ordered the PC that I received on Monday. It turned out when I brought the pkg. in and looked at label, it wasn't for me. It was for some guy that lived 2 blocks down the street. I called him, he was actually in another state and had ordered it for his mother.
He had his mom call me, she came and picked it up a few hours later. Thankfully, I am an honest guy.
I usually end up with my ammo being left either on the porch or inside the apartment building door, but never at my apartments door.
I really do hate the UPS drivers, they are the worse. Fed Ex usually gets it right, most of the time.
*To the OP, I hope you can find your package.
As always, stay safe.