Not sure if I explained it well but you know when you have multiple spaces, you will still see the opened app on that other space on the app drawer on the bottom. I hate how it makes my desktop cluttered. There's a reason why I separated that space.
I work multiple jobs so I assign different spaces for it. I want that space to act as its own desktop. Like if I open Finder, it will open a new Finder window on that space and not take me to the space where there's an opened finder app :(