Even the most simple forms of life are so complex as to require 100's of interacting biological systems to be viable. It is just not possible statistically speaking for that to happen randomly.
So instead we have some magical Guy who whips out His magical wand and >poof< everything gets made out of whole cloth; only His inventions are poorly-made - they’re the biological equivalent of Yugos, the infamous Yugoslavian attempt at entering the US auto market - that they barely last 30 or 40 years before they start breaking down. Yeah, right.
The fact that your imagination is too weak to fathom how something might evolve is not proof that evolution is false and neither is the fact that it cannot be fully and satisfactorily explained yet.
Those are things that science continues to work on. Which is as it should be.