I am not contesting that advantageous adaptations enable an organism to survive. That is obvious.
And the only long term way in which that happens is via mutation and natural selection. By long term I mean something that lasts over evolutionary time-scales.
I am contesting your claim that evolution entirely happens through random mutations because of which an organism happens to have a certain phenotype and because of which it happens to survive and reproduce in a specific environment.
Then you are denying the evidence. Once again this is appears to be unreasoning blind faith.
Organisms adapt and change their phenotype to suit the environment. It is a deliberate attempt to survive and reproduce and not something that just happens by chance.
Although
some organisms can adapt their phenotype, that is an ability that itself had to evolve and it doesn't last in subsequent generations. Many organisms do not do anything deliberate. Suggesting this as a significant driver of evolution is just absurd. Evolution
requires genetic alteration and, as I've said before, there are vast numbers of examples in which we know exactly what mutations led to what evolutionary steps. Just ignoring that fact won't make it go away in order to suit your blind faith.