you did NOT folow the Instructions carefully it seems.
2. Android SDK + Required Resources
You need to download two components, both of them do not require installation.
Download Android SDK Command line tools
Make sure to read and agree to the SDK license. Click on the Windows command line tools to see the license.
Android Studio is not needed and will not be affected by the command line tools (which are always required).
Unzip it in a folder such as C:\Android
Download the required resources.
Unzip in the same folder. It should look like this:
This is how the folder should look like....