Open the applications folder and drag item to the trash empty and job done in the main.
A few suites such as those of Adobe and Microsoft employ uninstall programmes
Now if you want to remove the small library , plist and kext files you may have to do some searches, in the hidden library file which resides in your home directory and in the system files .
An alternative is a small app such a Appzapper its $20 and is GUI that runs terminal scripts in the background; finds all those associated files and the application and deletes them really easily . You just drag the icon onto a window and hit delete .
https://www.appzapper.com/store/