Lab leaks/accidents are fairly common. This didn't require some malicious intent or a "perfect storm" of events to occur. There are like 1 or 2 every year, that we know of. https://en.wikipedia.org/wiki/List_of_laboratory_biosecurity_incidents
A study investigated and saw the following from 2000 to 2021 (https://www.chathamhouse.org/laboratory-accidents-and-biocontainment-breaches/scale-problem-today):
"... identified laboratory-acquired infections in 309 individuals, documented in 94 incident reports covering 51 pathogens of varying degrees of hazard. Some of these infections were fatal, and some resulted in the spread of laboratory workers’ infections to others in the community. In addition, the researchers identified 16 incidents of pathogen escape from biocontainment facilities during the period."
And that's not even including all the smaller incidents which adds up to about a hundred a year.
So a lab leak is not only plausible, it's very likely. It requires no malice or conspiracy. And Wuhan actually has a lab that was studying the COVID virus. The communist party however has already covered up, so actual evidence is hard to get.