Yesterday I won a game, and I hit analyze. I thought I was really dominating and my many-step plans were outmatching my opponent. The eval graph showed that I must be right. Then I learned there were several missed wins in a row as my opponent had blundered their rook and I never took it--instead executing my many-step plan.
Good thought process which is go back but remember the other while your doing your go back and this is done for reasons of sight to sharpen your insight skills😊
Night/Bishop goes to e5 to block the check, and white can't take on e5 with the Bishop because the rook is hanging on d1. White doesn't have to take so taking on f5 with a discovered check might still be fine, but they probably just thought Bd5 was better. Why? Just master-level player things, I guess :)
Trying to prove that your opponents are powerless and that you can defend as well as a computer engine is perhaps good practice, but don't over-do it, or you will develop a habit of always going overboard that way.
