Welcome Evid3nc3 to the discussion!
As a Catholic, it is lamentable to me to see the process you underwent, although I am certain you do not feel the same way. I watched your videos, and I have to say that I’m impressed by the time and effort taken to produce them. Under Parts 3 and 4, you focus on a lot of the more common arguments for atheism, and some are indeed strong.
However, like you said, both sides have their experts, and their philosophies, and their science. What it boils down to is, which are you going to side with? Despite what your personal life testimony may have concluded, other people undergo the opposite. There are a lot of people that have converted to the faith
as a result of individual study and truth-seeking. The most famous example is Lee Strobel, the journalist who created the books/videos on the Case for Faith and Case for Christ. Don’t get me wrong, I’m not saying his arguments are definitive, or even that strong compared to others, but my main point is that there are people who do see both sides of the argument and side with theism.
As a college-aged man who has personally undergone these trials, I have to side with theism as well, and with Catholicism too. The evidence that I have read about makes me certain that I would have to have more faith in being atheist than in being a theist.
Anyway, I applaud you for trying to discern the truth, whether that is set in a God or not. Even if this may be in vain to you, I will pray that as you further study, or more arguments are published for either side, that you find yourself in the loving embrace of the Church oncemore.
(even though I understand that you are perfectly happy and feel more fulfilled in the position you have taken currently)
Edit: Antony Flew was one of the biggest proponents for atheism, and led a large part of the New Atheist movement, but converted after learning some of the defenses of the Faith that came about the new movement itself. Interesting story, his, and he wrote a book about it as well.
en.wikipedia.org/wiki/Antony_Flew