2) The Wuhan virus lab has been experimenting with corona viruses for a long time, including gain of function, and it had a history of problems.
3) There's no indication--as in zero--that any other country had covid-19 cases before China. And in this case, lack of evidence IS evidence for lack, because case records are open (except in China, it seems).
Now if you want to debate this point further, I suggest that you establish with us that you are not a CCP hack. So repeat after me: Premier Xi looks like Winnie the Pooh.