IMPORTANT: Navigate to the installed directory (typically C:\Program Files (x86)\Nox\bin), run MultiPlayerManager.exe, go to ☰ > Settings, and disable "Autorun on startup". Otherwise you'll get spammy advertisements for their games, even when NoxPlayer is closed.
Heck, delete that EXE. I definitely did, and I'm not aware of any impairment in functionality.
There's a lot of pop-ups and self-promotion of their games and such. It's annoying but not a barrier to obtaining the desired functionality.
To install apps from the Google Play Store, open the Browser and navigate to play.google.com.
TikTok works pretty well, at first. Collections are available, and there's minimal lag while playing videos.
However, if the app gets closed for any reason, the second/third/etc times it starts up, it will crash with the error pid: 9094, tid: 9228, name: tp-default-7 >>> com.zhiliaoapp.musically <<<
You can get TikTok to start working again by going to Tools > Settings > Apps > TikTok > Force Stop, then click on Storage > Clear Data. This means you have to login all over again, every time you start TikTok anew, but at least it's ONE way to run TikTok on your PC?