All this just b/c I changed my mind over the shape of the earth
That's just it; it's not about changing your mind.
You said that you watched the Charles Duke clip of his testimony - and that you honestly believed every word he said.
On that clip, at around 3 minutes 11, there is a picture of the earth, taken from space. If you honestly believe that clip, then you must accept that image. You can see what shape the earth is. Furthermore, Charles Duke was there - he could see what shape the earth is.
If you believe that, you have changed your mind about accepting the evidence and eyewitness testimony of a fellow Christ.
Your prayer asking God for forgiveness for doubting the moon landings; are you saying that you repent of writing it, of saying "sorry"?
What about your statement that Flat Earth was nonsense, that it would take you time to really grasp that and that you would trust God to help you? 4 or 5 days later - "I've found a clip on YouTube. Globe Earth is rubbish; I'm back on track again".
Your vow to trust God didn't last long - the god of YouTube said something different, and you gave in and agreed with it.
You have no idea how idiotic, unscientific and insulting you are being.
Even if anything you said checked out scientifically - and I leave that to others, but they seem to be saying that it doesn't - why would anyone believe you when you contradict yourself and go back on your previous decisions, that you thanked God for?