On your Mac, if the desktop becomes cluttered with open app windows, use Spaces to organize the windows into additional desktops.
support.apple.com
Been working this way for years. Makes multitasking massively easier. At work I keep all my messaging stuff (Slack, email) on one desktop. Calendar and to-do app stuff on another. And then I'll just put all the windows and apps related to a specific thing I'm working on all on one desktop. There are a bunch of ways to switch between spaces, but generally I just command-tab to the app I want to get to, and the Finder quickly switches to that space.