Science has not fully discovered how/why abiogenesis and evolution occur and I believe it involves forces beyond current science's reach.
You don't understand that science (I am talking about science in general, and not just evolution or abiogenesis) will always discover something new, so everything will always be not "fully discovered”.
But each discovery will increase our knowledge to each branch, field and subfields in science.
If you look at the Big Bang cosmology for example. There are number of earlier epochs that BB scientists have predicted, that are still hypothetical and theoretical, because our current technology cannot observe, verify or refute anything older than the Recombination epoch (such as the Planck epoch, the Great Unification epoch, Inflationary epoch, Quark epoch, etc.)
The Recombination epoch (RE) marks the beginning of when electrons finally bonded with atomic neclei of ionised hydrogen and ionised helium elements, producing electrically neutral hydrogen and helium atoms. This bonding caused the Cosmic Microwave Background Radiation (CMBR), the earliest observable event that we can observe, research, collect data from.
However, all these earlier epochs, are pretty much solid, as far theoretical physics can be, as it follow each epoch backward, it is logical that they follow things that should happen with quantum physics and general relativity before everything break down as one near the singularity.
For example, before a single electron bond with nucleus of ionised hydrogen atom, it more than just logic that nucleus must form around a proton particle, first (for ionised helium to form, the nucleus must enclosed 2 protons and 2 neutrons; there are no neutron in hydrogen nucleus). This epoch is known as the Big Bang Nucleosynthesis (BBN), first predicted by George Gamow, in 1948. According to the current theory, BBN started 10 seconds after the Big Bang, and ended 20 minutes after the Big Bang.
Before BB Nucleosynthesis can happen, another earlier epoch would explain how protons and neutrons were formed from the subatomic particles - quarks. Each proton and each neutron are made of two quarks, and producing these new protons and neutrons from smaller particles are known as hadrons. This epoch is called Hadron epoch.
And there many more epochs before BBN and the Hadron epoch, like when quarks, electrons, leptons, etc, first formed.
The predictions of each earlier epoch, are based on our understanding of the Standard Modern of particle physics.
My point in all this with the Big Bang, is to show that there are lot more that we can still learn, and even more to be discovered.
But with evolution, we have a lot of evidences that actually supported what we know already. And there are still more we can learn and discover in evolution. More evidences than we have on gravity, more than we have on general relativity and quantum physics.
One thing we don't need, is your superstition of this creation or Brahman. The concept of Brahman don't explain anything of how nature works, and it is no better than the creation myths of the Abrahamic religions that say "God did it".