Why Chinese couriers do not deliver parcels they disappear during transport or are delivered to another place or left in a safeplace ETC,

I would like to request some information of what location this delivery carrier uses when in Tustin, Ca since my package was supposedly delivered on Saturday 12/19/23 at 5:13pm however I received no package. The tracking number for this package is AT115910650CN. I would like to resolve this since I have another package using this same carrier and I would like to actually receive that package and not have it disappear just like this package. The second package that is on its way has the tracking number AT176545014CN.

Over a month ago I was watching the tracking it showed my package showed up at the US port and then it disappeared y'all need to find my package because it was not accepted into the United States obviously and your shipping company and it's your responsibility you need to find my TV or you need to pay for it