I can understand your feelings. Please read my analysis carefully. I hope my analysis will help you:

What I want to ask is, where did you lose your luggage? Was it on the plane, or was it left on the civil aviation bus after getting off the plane?

if you left it on a civil aviation bus, please contact the driver of the civil aviation bus as soon as possible, ask the driver to help you find it, and ask the driver to inform the unit supervisor. At the same time, you can call the police station to report the case with the ticket of the civil aviation bus you bought at that time. If it is found that the luggage was left on the bus afterwards, please show the relevant ticket, and let the responsible department of the civil aviation bus cooperate with you to find the relevant vehicles and drivers, and see if they found it at the first time and sent it to the relevant department for your preservation.

if you left it on the plane, please contact the relevant airlines and relevant departments through your ticket. (After each flight is finished, there are relevant personnel to clean it, so please contact the responsible department responsible for the cleaning.)

If you check in, please ask the ground staff after you get off the plane and go to the baggage inquiry department to collect your luggage. If it is not found at this time, please provide the relevant credentials of your checked baggage and ask the ground baggage inquiry staff to help you inquire.

the above are three ways. If you still can't find it, you can only report it. I hope you can find your luggage early and spend the upcoming Spring Festival in a good mood.

personal suggestions for reference. If you have any questions, please ask them.