I suspect there aren’t many who share my opinion on this, but I find App Library the single most useless feature iOS has. If one could create one’s own categories (and sort them one’s self!!), it might be uselful. As it is, the fixed categories it sorts apps into are often bizarre, at best useless.
I did (and do) much better just sorting apps into different screens, and swiping. Accidentally swiping into App Library is frequently difficult to get out of.
It is simply useless, and constantly in the way. Is there a way to make it go away?
How is it any different to swipe out of the App Library than any other Home Screen? As far as I can tell, it works in exactly the same way.
And no, the App Library can’t be turned off—it’s a core aspect of iOS, so you don’t have to put every app on a Home Screen. I almost never use it, but I love how it lets me keep numerous apps out of my way.
I do not know how or why, but, at least for me, it consistently takes numerous swipes to get it out of the way. But why should I have to bother with one swipe?
It’s organization is arbitrary, and unflexible. Apple has done nothing to improve it since it was first released. I would rather just be able to turn it off. It is in my way.
I was just using the App Library and accidentally tapped between the category blocks and found myself out of the Library and back into the previous screen. Maybe instead of swiping five times to get out you should just tap in one of the open spaces between the blocks in the Library.
If there is, I haven’t found it, but it would be nice if there was a way. I was just pointing out that that Will_B didn’t have to swipe five times to get out of the App Library. I rarely use the Library because almost all the apps I use are on either my first screen or my second screen which is full of apps grouped into ‘folders’.
On those rare occasions when I do use the Library I tap into the Search field at the top that has a magnifying glass and says ‘App Library’. This presents all my apps in alphabetical order which I find much easier to use. I especially like that the first letters of the apps are listed vertically on the right side so I can tap one and go straight to the apps starting with that letter.
Getting in and out of the App library on an iPhone is at most a 2-step procedure:
Slide your finger to the right along the dots at the bottom on the home page to quickly reach the last page.
Slide that page to the right to get to the App Library
You can reverse that procedure to get back to the first page or, after sliding right to get to the last page. You can also slide up from the bottom of the screen twice. The first swipe brings you to the last page; the second swipe brings you to the first page.
Siri may be able to understand more than speech! 
