My disbelief in universal common ancestry has nothing to do with religion , beliefs or religious texts of any kind.
While I don't wish to contend you're lying - I don't believe you. I think your rejection of common ancestry is specifically motivated by religious belief. I think it's possible you may not realize that, but I find it very hard to believe that you're engaging in scientific skepticism here absent any relevant knowledge.
You assuredly don't hold your own religious beliefs up to the same degree of scrutiny.
I don't need EVERY detail. However, this is one I need. If there is no possible way to explain how the cells became true multicellular reproductive organisms, then it's pretty much a deal breaker, in my opinion
A deal-breaker for...? You? But explain why that matters. For every expert topic there are literally billions of people ignorant of the details - their acceptance, rejection, skepticism, belief is completely irrelevant and of no consequence to arbitrating what is empirically true.
You are, of course, permitted to disbelieve for bad reasons just as you believe for bad reasons, but the fact of common ancestry doesn't reside on your acceptance. As with all factual knowledge - your rejection of it just indicates a problem on your part.