We don't.It was very apparent you were firmly arguing here in 2020 that the wet market was where the virus jumped to humans.
You have definitely been trying to dismiss the idea and anyone who presents the idea that it was a lab leak ever since.
Either we all don't know or you know for sure that it was the wet market. I'm pretty sure it can't be both.
The wet market is still the version with the most evidence supporting it.
But your point seems to be "we know it is the lab because China acted sketchily", which makes no sense, since they acted sketchily about the wet market as well.
Nobody supporting the wet market explanation is saying "We know because China is trustworthy and we love China".