Based on what we have observed, your position is rather easy to refute.
If we look at the fossil record going back 1 billion years ago, only single-celled organisms are found, and yet today look at all the various forms of animal and plant life.
In Hebrew, the word "yom" means day, thus not "epoch", "centuries", etc. Only when used symbolically can "yom" stand for longer periods of time.
All material objects appear to change over time, and genes and all life forms are material objects. This you cannot logically refute unless one uses blinders to ignore reality. Christianity should be enlightening, but when some use it to ignore reality, it is not enlightening-- it's darkening. Fortunately, most theologians and denominations realize this today, so maybe find a church that teaches that which is "enlightening".
Paul wrote that a seed dies and then something grows from it.
Furthermore, may I ask where you get the material that 1 billion years ago only single-celled organisms are found? The word 'day' translated from the Hebrew does not always mean a 24 hour period. I
s that what your fundamentalist church taught? That each 'day' of creation was a 24-hour period? Sorry, but that wouIdn't make sense according to rational analysis. In my opinion, of course. I can only hope you can expand your thinking a little to offer some latitude and flexibility.
The Bible can use the word day to denote something other than 24 hour periods as we tell time now. You say it's metaphorical sometimes. It does not have to mean 24 hours in any case, yet refers to a particular period.
Again -- the word day, or 'yohm' can mean a period with an opening and a closing. I wonder what makes you think that the Genesis account of creation was not using the word 'day' in the sense of a set period of time, yes, even epochs, each day with a beginning and a closing. And for your attention, you may note that the 7th 'day' has not ended yet. It's still going. A long day but not long enough for some. In fact, Genesis 1:5 brings that out\. Notice, please: "And God called the light Day, and the darkness he called Night. And there was evening and there was morning, one day." So arranging things, the light part was called Day, and the dark part was called Night. Again -- the word 'day' is somewhat flexibly used in the scriptures. (Have a good day--)