MIT App Inventor is a great way to explore mobile application development for Android without needing to know how to code in Java or Kotlin. This is often referred to as "no-code" or "WYSIWYG" (what you see is what you get) programming.
The App Inventor uses Scratch blocks and a visual designer (not so dissimilar from Xcode's UI) to program the app.
However, the emulators provided by MIT aren't necessarily modern or full featured. There is a way around this though.
After building your app in MIT App Inventory, click Build -> App ( save .apk to my computer ) to download an .apk build of the app.
This install will take some time and will consume multiple gigabytes of space on your computer
Download Android Studio
Run/install Android Studio. You should be able to use all the default options. Just keep clicking next, confirm, yes, agree, etc., to continue the process.
Wait until the installation completes.
Open Android Studio. At the "splash screen" introduction menu/prompt click Configure -> AVD Manager.
There should already be a default Android emulator listed here. At time of writing, it is a Pixel 3a.
However, there is also a button to + Create Virtual Device as needed.
Once the desired emulator is in place, click the play button (a triangle pointing to the right) to start the emulator.
You should see a window running on your computer that looks just like a real life physical phone.
Don't overthink this. Find the .apk file on your computer (Desktop, Downloads, wherever) and literally drag that file into the emulator's window.
Literally drag the app file to your emulated phone.
A message should flash for a brief moment saying, Installing APK...
Run the app from the emulator like you would on any real world Android device.
That's it!