What we have in Genesis 2-3 is an ancient Israelite etiological myth of how the human race came into existence. The problem you are facing is that the original story bears a heavy load of interpretative layers that have been saddled on it through Jewish exegesis, early Christian interpretive use of the story, with a good measure of Protestant and JW hermeneutics piled on top. It is not easy to wrest ourselves of this cultural baggage and encounter the story with fresh eyes without reading into it all the theological notions that were constructed out of it in early Judaism and Christianity. As you realize, nowhere does the story refer to Adam as "perfect", but it may be harder to read the story without inserting the figure of Satan into it (whereas there is no Satan in the original story), or the notion of "sin" or "original sin" (also absent in the original story), or a whole host of other things that we have been accustomed of reading into the story. Another problem is that the version that survives in the book of Genesis is probably just one stage out of many unknown retellings of the story before it assumed its fixed written form. There are a number of clues within the narrative that it has reshaped older forms of the same story. So it is possible that there was no single original understanding of the story, but that it meant dfferent things to different people even when the story was first circulated in written form.
I would suggest reading the story again as if you were reading it for the first time, without presuming anything else alluding to it in the NT, or in Christian tradition, or in JW literature. Remember one thing -- this is supposed to be the story of how humanity first came into existence. And in particular, it is the story of how one man and one woman came into existence -- the beginning of their life on earth. How do people normally begin their lives on earth? What is typical of that life stage? I think that if you have that insight, the story will make a whole lot more sense than what it is pressed to explain in later Jewish and Christian interpretive traditions.
