[Worldtraveler once upon a time]

--- "...For the last two years when numbers have started to crash...."

For the last two years, the numbers were always "crashed." Gathering up the official data from the official sources....

worldometers.info

As of 4 February 2022, according to worldometers' "official" data,

( 5,733,072 "worldometers official" global deaths / 7,923,543,454 global population ) x 100 = 0.072 % mortality rate worldwide.

Less than one tenth of one percent "officially" Covid dead over two years worldwide, says worldometers' data.

One can choose other "denominators" like CFR and other "estimated" data and models, but the "officially official" data says the Covid-19 pandemic was survived by a mere 99+ percent of the world's population. Highly survivable so the "numbers" haven't "started to crash."

[gas_dr]

You are analyzing with a lot of maybes conjectures and an invalid denominator by making that N the entire world population. Of the known cases, it is a valid statement that the numbers are crashing.