Open Finder
Click Applications in the left sidebar
Find the app you want to erase
Drag the app to Trash
If prompted, enter your admin password
Empty Trash
If the app has uninstaller files, open the app’s folder (in Applications) and run the uninstaller, then empty Trash
If you want to remove related files, open Finder and delete any remaining app support, preference, cache, and log files for that app (if present)
Empty Trash again after deleting related files