Was it in a primordial tidal pool or perhaps a volcanic vent , was it just a random coincidental event that just happened to have all the ingredients for life, a mix of carbon hydrogen nitrogen oxygen Sulphur calcium iron zinc sodium water among others that just happened to for Amino acids and proteins and other including a membrane of sorts or was it DNA and or RNA from another planet hitching a ride on a asteroid .
Add in some heat and light and a little lighting you might get life . Again you might try and fail 100,000,000,000,000,000,000 times in a row. There's no true knowledge of how it started or did it get a boost perhaps . People often use the word god and some bitterly deny he exists. Fact is no one know how life got started , and what we refer to as god could be ? we really do not know now do we. A alien on earth 200,000 years ago would indeed be a god or there could be a real god or we could just be a simple coincidental event. No one really knows. We have combined water oxygen methane ammonia and hydrogen in a test tube with a electric arc and created Amnio acids with out which life can not exist as we know it . All those things existed on earth for billions of years .
For me, it boils down to this:
Assuming infinity, all that is possible, is inevitable.
If we assume infinity, which I think we should because even if we can't prove it, it does exist in the abstract, so, assuming infinity, then for life to occur, it merely need be possible. With infinity as the backdrop, if anything is possible, it it will be inevitable. It's not a question of IF, only when. This statement, however, does not assert that anything is possible. But, clearly, life is possible. As to the mechanics of how we came to be, you are correct, no one really knows, though we can make some substantive guesses.