How do you delete unwanted Apps?

If they are Apple apps that come as part of the OS then you can't delete them, they take up very little room

so there is no real advantage to deleting them.

If they are third party apps then sometimes it can be as easy as moving them to the Trash, and then emptying the Trash.

Other apps may come with their own un installers, if that is the case you must use that method to make sure that all files associated with the app are deleted.