In most cases, it most likely is the flu. It would be logical to take an average of previous years' flu deaths, along with those that died from pneumonia, and all other respiratory diseases, and subtract that from the alleged total of Covid deaths to come close to realizing how many actually perished in relation to Covid. The flu did not suddenly disappear, and neither did the deaths associated with contracting it while having co-morbidities.
Science is not your strong suit like you think. They have yet to isolate and purify Covid, which means they can take their nonsense about a variant being identified and shove it. This also means they cannot truly 'tune' the PCR test to properly identify Covid.
You could find this helpful:
https://youtu.be/EWNkJUDctdk
https://odysee.com/@drsambailey:c/Covid-Faqs-2:d?fbclid=IwAR1HAfiZHq55HIRFUgoYQmMIOCCOIq9D-UolDGpJVc0qxZBEvaKZ3x7gM-M