You don't have a biological understanding of how RNA and DNA mutates. It can't be engineered to mutate. Can it be manipulated in a lab? Yes it can but that is not a result of what happens in the population. The virus can mutate in the population on its own. No conspiracy needed.South America brings you the lambda variant
Southern USA brings the Delta
Europe has the delta as well
Kappa is in India
this explains it better
Tracking SARS-CoV-2 variants