Big spreads are like road maps
I'm aware that a lot of people use the Celtic spread, where they lay 10 cards down with the last one as the outcome. How does that work out for you as far as your attitude and changes you make to affect the outcome?
The CC used appear (maybe still does) in the little white books that came with tarot decks. So a lot of new readers learned it. The problem is that the CC is not the best spread for every question. Big spreads like the CC really require a "big" question. Like "What will happen if I leave my job and travel?" not "What will happen if I have lunch at a new place tomorrow?" Small questions are better served by small spreads—like 3 card spreads or 5 card spreads.
Now, that said, the whole idea of larger spreads, including the one you do, is this: when you're very deep in a situation you lose all perspective. Kinda like you're in the middle of a traffic jam. You can's see up ahead, or behind, and you don't know whether you should get off the road or go back or what. A big spread's job is to raise you up and give you a bird's eye view. Now you can see where you came from (past), where you are (present) (just to remind you how you got there), where you're going to end up next (immediate future), and where you will ultimately end up if you don't turn off this road but keep creeping along (outcome).
More importantly, this spread gives a *reader* all this info on their sitter. A reader, after all, is like someone getting a phone call from someone in that traffic jam. Where are they now (present), what street did they take to get there (past), where will they be in the next few minutes (future). You look this all up on your map, so you can tell your sitter whether the jam is going to clear up in the end, or if it would be better to take a side street.
The outcome is rarely inevitable. What would be the point of doing such a spread otherwise? The job of any such spread is to tell you what you can expect if you stay on that road. Where will you end up? And if it's not where you want to go, what might you do to get off it and get on the right road. The CC is not for every question, nor every reader. I've never liked it myself and I don't use it. But it can and does get the job done for those who do like it. Does that answer your question?