Besides Android, Microsoft Windows and Linux I also work with Apple devices. I have two apple laptops, a old iPhone and an old iPad tablet. The tablet is used for listening to podcasts and occasionally YouTube videos. I was having problems toggling between open apps or to see what was open. A few days ago I discovered that quickly pressing the center button twice shuffled the open apps neatly in a row. Then I can close an unwanted one or open others that were hidden. One time I did this and there were some running apps that I didn’t know were running. They were slowing down the tablet and now I could close them.
I tried this on my old iPhone and it worked as well. There were 12 apps running at once so I was able to close the unwanted ones. It will be nice to be able to close and view a running app list like I can on my Android devices.