how to remove apps from my MacBook that were not purchased from App Store

How do I remove an app from my MacBook that was installed by a third party without my permission?

The app is called "Advanced Mac Cleaner" and I believe was installed simultaneously during installation of a flashlight drive app for MAC. According to information on the internet, this app is a scam. It has already scanned my MacBook Pro and claims to have found some errors. I like to completely remove it.