This is an excellent, in-depth introduction to the science of the COVID virus. There's plenty of biochemistry, but Yuri Deiglin holds our hand going through it. He's very clear and very complete.
Along the way, he evaluates the evidence that the virus was developed in a laboratory. He concludes, as I did (JJM), that it is a plausible hypothesis, and that the articles dismissing the possibility out of hand are more politics than science.
On the one hand, viruses mutate at a high rate in nature, and also to recombine. It is common for pieces of one virus to end up in another's genome.
On the other hand, there are published accounts of laboratories deliberately adding exactly the functions that COVID has to exactly the bat coronavirus from which COVID arose. And much of this work was done in the very city where the first COVID cases were reported.