Joe Scotch wrote:

Seems to me anyone who runs Windows who has an Android smart phone "might"
want to know how to run those apps on Windows - just because they may also
have an app they like that is only on Android.

Maybe for some Android games. All the apps on my Android phone either
have a far more robust counterpart on my desktop PC under Windows 7 or
the Android apps are not applicable for use on my desktop PC.

- A compass app makes no sense on a desktop PC that never moves atop a
desk that doesn't move in a house that doesn't move.
- An app to detail the cellular signal and tower is not applicable on a
desktop PC without cellular components.
- Although I could use wifi to connect a desktop PC to the wifi
router/cable modem, I prefer wired Ethernet connections for security
and simplicity and highest bandwidth, so I don't need an Android app
emulated on my PC telling me the wifi details. Some users do use wifi
between their desktop PCs and their wifi router but there are are
Windows programs for that rather than using an Android emulator to run
an Android app.
- There are Android apps for MS Word, Excel, Powerpoint, OneNote, and
Outlook. I prefer the far more robust desktop versions of those
programs. If I wanted free equivalents, I'd use LibreOffice for the
office suite, emClient for e-mail/calendar/tasks/contacts (I trialed
Thunderbird for 6 months but discarded it), and OneNote (which is free
to everyone under every supported OS, including Android and Windows).
- My desktop PC is not going with me on drives so none of the navigation
apps are applicable on it: Google Maps, Here WeGo, Waze, Gas Guru,
ParKING. I don't need Android nav apps on my desktop PC where I can
use a web browser to access the more robust web interface to those
services.
For example, I cannot report in the Android Google Maps app via
feedback an error or correction in a proposed route by Google Maps
but I can using a web browser on my desktop PC.
- I don't need any of the Android apps for shopping (Walmart, Target,
Home Depot, Menards, Cub, eBay, Amazon, Newegg) since using the web
browser on a desktop PC gives me all the functions of their web sites
instead of some limited subset of features through their Android apps.
- While the Adobe Reader app is on my phone, I wouldn't bother using
an Android emulator to run that on my desktop PC since there is a
desktop PC version of that program. In addition, I use PDF-Xchange
Editor on my desktop PC.
- I don't need a Speedtest app on my desktop PC where the web browser is
a better interface to their site.
- I have the Droid Optimizer app on my phone but it inapplicable on any
OS other than Android. Under other [desktop] OSes, I can actually
exit a program to have it actually and immediately unload from system
memory, not linger around in limbo awaiting another app squeezing it
out of memory.
- I have an Amcrest app for an IP camera on the phone but the web
interface on a desktop PC provides far more features than does their
Android app.

I could run wifi dialers on my desktop PC to make and receive calls
using my desktop PC but I don't have the need. While I have Skype on
the phone, I don't bother with it on my desktop PC. Otherwise, I find
Android apps to be poor cousins of far more robust software I can use on
the desktop PC under Windows.

Sorry, I don't waste my time on inane games designed to addict boobs
with endorphin stimulation, like Candy Crush. Personally I cannot see
the draw to those stupid games; however, I also find slot machines at
the casinos and the whole environ there to be visually and audibly
irritating, not pleasure stimulating. Instead of luring me in, they
make me want to get out.

I see no point in installing an Android emulator to run [more slowly
than on native hardware] an Android app (NewPipe) to supplant using a
web browser on my desktop PC to use YouTube. Maybe there are Android
apps for which there is no Windows counterpart to run on a desktop PC
but I haven't run across any of those that interest me. If I'm using a
desktop PC, I want more robust features and functionality than found in
Android apps, or use Windows software designed for that OS rather than
trying to intercede an emulator for lesser functionality in an app coded
for a different OS.

Just what do you get in the NewPipe app for Android that isn't usable
through a richer desktop web browser running on a desktop PC to use the
Youtube site?

In my case, as I said in the OP, the only Android app I care to run on
Windows is New Pipe because it has functionality that isn't known to be
available on Windows in a single executable.

https://f-droid.org/wiki/page/org.schabi.newpipe

Bluestacks is one choice already mentioned by me in my prior reply
(snipped in the quoted content in your reply to my reply).

Another that comes to mind is the Android SDK that includes an emulator.
It's part of Android Studio used by developers to use their Windows
hosts to do Android programming plus it allows testing under different
Android scenarios. Since you aren't doing programming but just want to
run an Android app, it's likely an emulator bundled in a programming IDE
is overkill for your needs so I didn't suggest it before. See
https://developer.android.com/studio/index.html.

Another is to use an image of the Android OS ran as a guest OS inside of
a virtual machine. Fox already mentioned that solution.

Now it's up to *YOU* to decide which environ under which to run an
Android app that really has no use on a desktop PC. There is better
software for PCs designed to run natively on that hardware+OS platform
than to emulate Android apps on an alien platform. For your example of
NewPipe, I don't see it is better to emulate it on a PC versus software
meant to run under an OS on the PC.