Most covid infections happened because about 80% of people who were infected were asymptomatic or had minor symptoms that can be mistaken for a cold.
Because those 80% didn't know they were infected, they carelessly went around infecting many others.
All pandemics and epidemics start with one infected person, the rate at which it spreads depends on the virality of a virus and if there are many infected people travelling.
Some viruses that aren't very infectious can take years to spread around the world, other viruses like covid that are easily passed from person to person took weeks to spread.
It seems suspicious that the virus started right before millions of Chinese people went on vacation all over the world.
If it was a virus from a lab that was accidently or intentionally spread, then it's the damn commie CCP who are responsible either way.
Was it an accident and the CCP kept it secret for 2 months so China's economy wouldn't suffer and they hoped the covid virus would die out???
Or did the CCP commie bastards intentionally release the virus to weaken the economy and society of the USA and other democracies, so that China could somehow increase it's economic and military strength???
We will probably never know the truth.