Quit the app
Open Finder
Go to the Applications folder
Drag the app to the Trash
Empty the Trash
Remove leftover files from Library folders if needed
Delete related support files in `~/Library/Application Support`
Delete related preferences in `~/Library/Preferences`
Delete related caches in `~/Library/Caches`
Delete related saved state files in `~/Library/Saved Application State`
Remove login items if the app added any
Restart your Mac if needed