It is really difficult to help you on this , esp. based on the information provided so far.
I tried to quickly download Google Sound 2.2 from APKmirror, installed on a OnePlus 7 Pro and a ZenFone 6, and both behaved the same.
No extra apps except the Google Sound app.
DId not verify the functionality however.
This already goes beyond what is officially supported on the device.. (As Sounds is simply not an app that is meant for devices other than Google Pixel.. nor is APKmirror, or any "website", the proper way to install apps).
Did u find that sounds app in app drawer after installation. And when u click on it u will find that app redirecting to settings. And first of all is your device factory reset?
@Anders_ASUS can u comment on this
I used Lawchair since the first day,i can't use the Asus launcher because i don't understand why isn't a option to landscape the launcher it's so easy to use on TV by mirroring,with the Android update 10, i see this in m'y drawer,but with Lawchair you Can Mask the icon so....basicely it's a Android 10 bug
There's an option to landscape ur launcher