How to get a blurry background
Three ways
Shoot wide open on your aperture
Use a longer focal length
Bring the subject closer to the lens
(optional: fake it in post!)
Using these 3 methods you can get a shallow depth of field and make your back ground blurry. You can also use these methods to do the Brenizer Method which involves sticking multiple photos together like a panorama to create the illusion of a shallow depth of field on a wide shot.