Here is an interesting article on what we know about COVID-19 after this much time into the pandemic. The main thing I think is interesting, COVID-19 isn’t that strong of a virus. Not just in terms of the fact that it tends not to kill its host upon infection (and hence its successful spread), but the fact that the virus, when exposed to the environment, tends to get damaged and loose its viral effectiveness quite easily. Really, the only thing that enables its spread is close human contact, especially breathing the same air from another person. And, of course, airplane transit of humans is what facilitated its international spread.
https://elemental.medium.com/the-most-likely-way-youll-get-infected-with-covid-19-30430384e5a5