First, you need to make one. If conditions permit, go back to the baggage counters at Los Angeles Airport and Vancouver Airport again to see if there are any lost baggage among the unclaimed baggage. Most of the time, luggage will be there. My friend had such an experience. Air Canada transferred to Halifax and contacted the baggage counter at the airport countless times. As a result, the luggage was recovered.
If you can't get back to Los Angeles Airport or Vancouver Airport. It's been 10 days now, and I can definitely tell you that the possibility of expecting Air Canada to find your luggage and return it voluntarily is less than 10%. It's no use contacting the local baggage counter in Los Angeles. As the luggage was not scanned in Los Angeles, it proved that it was not in Los Angeles at all. Contact Air Canada Central Baggage Office directly, which is the baggage department of Air Canada and has its own database. If your luggage is recorded, it can help you locate the lost luggage quickly. Tell them that you have filled out the baggage delay form. If you are required to fill in the baggage declaration form, Air Canada's website has downloaded, printed, mailed or faxed it to them, and attached some other documents, which will be listed on the form. If you are still in North America, the telephone number of Air Canada Bags Office is 1 888 689-BAGS (2247). If you are out of town, go to Air Canada to find the contact information of luggage offices around the world.
In the worst case, the luggage is lost, and there is no news at all. Contact Air Canada for compensation. The exact amount needs to be listed in the baggage declaration form. But the maximum is 1000 or 1500.