Oh good grief, we're questioning evolution now?
It is quite astonishing that AB is somehow challenging the notion of evolution (i.e. random mutations producing major impacts on survival and advantage for an organism) - particularly so right now when we are smack in the middle of a prime example of such evolutionary change and advantage - the coronavirus.
The coronovirus is closely related to other viruses that are not know to be able to be transmissible to humans - the key point here is that a mutation to generate the current 2019 novel coronavirus (2019-nCoV) permits infection of humans and for humans, therefore to act as a host for pathogen replication, ultimately to allow human to human infection. So this mutation provides the virus with evolutionary advantage - firstly a new ecosystem to survive and replicate (humans) but also the ability to be transmitted geographically across the world, due to human movement.
There is no 'guiding' nor does the virus think it is better in evolutionary terms - it is a virus, it cannot think. Yet that simple mutation has provided huge evolutionary advantage, allowing spreading to a new species and spreading to parts of the world where it wouldn't otherwise be found.
And this has happened not over millions of years, as some people suggest evolution progresses, but literally over a few weeks.
Now it is likely that the evolutionary advantage will be short lived, because either the virus will kill off its new host (unlikely) or the new host (humans) will develop immunity which renders the temporary evolutionary advantage redundant.
But nonetheless what we are seeing playing out across our 24 hour news channels is the most obvious example of evolution driven by mutations that you could possible imagine.