Pretty sure it depends on your phone, but some support hooking up a mouse and it accepts the clicks, same for tablets.

https://www.howtogeek.com/164783/how-to … or-tablet/

Important Note: Not every Android device supports peripherals with a USB OTG cable. Some devices don’t have the appropriate hardware support. For example, you can connect USB mice and keyboards to a Nexus 7 tablet, but not a Nexus 4 smartphone. Be sure to Google whether your device supports USB OTG before purchasing a USB OTG cable.

Unless you mean using your phone as a mouse while playing on a computer .  There are a number of ways, say for example if you use teamviewer...you are controlling the computer + mouse clicks/windows etc, there are apps that mirror a mouse as well http://www.remotemouse.net/ as an example

But overall..seems rather pointless...as it would be easier to simply play on the phone...and click there...

you can do that with various software already man