@345676543, the primary function of TRIGGERcmd is to run commands on your computers - using Alexa, Google Assistant, an app on your phone, etc.
The TRIGGERcmd Smart Home Alexa skill allows you to make a routine that runs when you run one of your TRIGGERcmd commands. You could create one that turns a smart plug off when it runs.
To run your TRIGGERcmd commands from your Windows computer, you could using:
Your web browser
The tcmd command line tool
A shortcut with the command's bookmark URL like you see below:
Your title says, "How to make triggers on Android." Currently, there's an Android app, but no TRIGGERcmd agent version for Android. The agent is what you install on your computer and use to create commands that you can trigger to run on that computer.