Steam’s maker, Valve, has been playing a huge role in Windows emulation on Android. Valve has funded projects such as Fex emulator and Proton, which allow Windows games to run on Android more easily.
Games aren't exactly playable, but it's mostly a step in the right direction.
Google will soon block the sideloading of apps from unregistered developers. Many emulator devs want to remain anonymous to avoid legal liability. This may mean popular PS2, Switch, and PS3 emulators ...
You can plug in your phone, download an emulator, or install the Google Play Store to access Android apps on your computer.