Character Creation: Origin Background

I have chosen 5.5e Core Rules but only the following 4 backgrounds are shown:

Acolyte, Criminal, Sage, Soldier

How do I find the other 12 backgrounds? Do I need to create them as custom backgrounds, if so, how do I do that? 

Thanks

Do you own the Players Handbook on D&D Beyond, or are you creating a character in a campaign that someone has shared that content with you?

Those 4 are the free ones from the Basic Rules/SRD.

Oh, ok. I do own the book but I bought it on Amazon. I guess there is now way to get the other backgrounds without paying extra to DND Beyond then?

Quote from Supergrey >>

Oh, ok. I do own the book but I bought it on Amazon. I guess there is now way to get the other backgrounds without paying extra to DND Beyond then?

The other way would be to join a campaign where someone is sharing it.

The digital D&D Beyond version and the physical version are different products and owning one doesn't automatically give you access to the other.

You can recreate them for free for personal use (dont share them publicly) using the background creator homebrew tool.