Your concerns are warranted. I wonder the same. I watched a video conference of some gene-splicing scientists who were experimenting with creating life by building RNA stands from simple sugars. Not just splicing together living cell components, but actually trying to build a cell from A, C, G, T chemicals derived from sugars. They were trying to kick-start life and have the cells reproduce. This had nothing to do with virus creation. More to do with eliminating the middle-man in creating goods, which is what living creatures do. Mimicking plants and animals ability to create foodstuffs, and just growing the end-products in a lab from man-made cells.
Anyway, one of their concerns was about contamination from an outside virus spoiling the man-made cells, and mutating it to something destructive that gets into the outside world. The video was from four years ago. And that was about scientists working on good purposes; there are other scientists using the same technology for not so good purposes!
So yes, what if this new virus was purposely man made? (Just speculation at this point.)
Makes me think about how my AML leukemia actually changed my DNA. It translocated the (4,12) chromosome . (As well as acquiring a couple of mutations). After remission from chemo/treatment, the effected chromosomes went back to normal .
While I’m very much leaning towards this virus being made in the lab, I personally experienced how nature can do some strange things.