Hi OldSoul - and welcome.
I also had a lot of these same questions as you so I know where you're coming from. I found the book "Reasoning from the Scriptures with Jehovah's Witnesses" by Ron Rhoades to be an extremely helpful research tool. It addresses a lot of these questions, explains the scriptures as used by the WTBS, and also includes other scriptures (some of which I had never read before or thought much of). I think it might help you out.
However - the biggest hurdle I had to overcome was to acknowledge that I may not be able to answer EVERYTHING. Being raised a JW I was used to being given an answer to every question - after all, they had an answer for everything because it was the "truth". Learning that some of these "answers/truths" were incorrect - I have to ask myself, which is better (1) not knowing the answer, or (2) thinking I have the answer when it's actually false.
I decided that option (1) was best for me. I've continued my search for many answers and have found that the journey itself, that journey to find the truth, has in fact offered me more than if someone simply gave me an answer. I have learned to think for myself, to consider possibilities I had never considered before, to listen to alternate theories and test these against facts before weighing in on my decision. Most of all, I've learned that this is not a quick fix - it is a lifetime journey, but well worth it.
As the old saying goes "Sometimes the journey is just as important as the destination". I wish you the best on your journey to find the Truth.