How to remove an app that's not installed on Software?

I have an app called HWP 2022 Beta, which I have installed manually after downloading the installation file from the website. The problem is I have no clue how to uninstall it. Any idea on how to remove an app that is not installed on the official Software?

Consult the install source.
Maybe there are removal instructions.
If they provided an install script … maybe it has an uninstall function?
At the very bottom of the pile of possibilities … it does none of those things … so you have to manually remove the files.