There's plenty of evidence it is not lab made.
Which is why the comment said "evidence" and not "proof".
Maybe the murder caught on camera is a lost identical twin, or victim of a very elaborate frame-up. The standard for conviction is beyong reasonable doubt. What is reasonable?
Maybe we have laws of physics wrong, and next tuesday sun will rise in the west, and Jesus rises from the dead. Again.
Do yoy trust governments and scientists? They used to claik smoking is a great way to get your essential vitamins.
Do you trust your own mind, because research has shown people can be manipulated into remembering things that never happened.
Ib radical doubt, the only thing you can proove is 'I think, therefore I am".
If you are asking me to proof a negative, that's virtually impossible.