1. Individuals within species are variable
In other words individuals within species are individuals ?
They grow ?
This fact neither evidences nor 'contributes' anything to Evolution theory.
In fact, since Evolution is merely theory, and poor theory at that, this self-obvious fact has nothing to do with Evolution, doesn't depend on Evolution, and is completely independent of Evolution.
2. Some of these variations are passed on to offspring
In other words reproduction isn't cloning ?
This fact too is a "postulate" of God's creation.
Merely labelling a fact, any fact, a "postulate" of Evolution theory does nothing for Evolution theory, nor does it make that fact Evolution nor Evolution evidenced in the slightest.
Since Evolution theory is that all life is reproduced biologically from one form of life.
I.e. that species reproduce different species, as well as their own.
3. In every generation, more offspring are produced than can survive
Meaning that death exists ?
That infant death exists ?
This "postulate" of Evolution likewise evidences nothing of Evolution/Evolution theory.
4. Survival and reproduction are not random:
Meaning, i suppose, that life and reproduction aren't accidents/accidental ?
This is the primary postulate of Creationism. That God (Life) deliberately created life.
After life's many kinds. And one life after its Maker's image.
This also negates Evolution Theory's equally patently absurd 'cousin': Abiogenesis.
The individuals that survive and go on to reproduce, or who reproduce the most, are those with the favorable variations. They are naturally selected.
To the contrary per history and observation: often the weak or 'unfavorable' survive, eg catastrophes, as well as the strong. Simply depending on the location of a given catastrophe. Which hurricane or earthquake or terroritst attack might equally as well trap or destroy a body-builder as a paraplegic.
In any case, 'natural selection,' that stronger or more flexible or adaptable or healthier individuals might survive (then reproduce) more than weaker etc ones, also itself fails to evidence in the slightest the Evolutionary Theory that one species can, or ever has, reproduced another species.
In other words a self-evident fact that stronger individuals often (though not always) survive longer than weaker ones, isn't evidence, much less any proof in the slightest, or species reproducing different species