How can I make installed app's icons show on the phone

[karensilver]

I am trying to make my phone work with my new Honda CRV. Tried to install android auto and a couple of other apps. When I go to google play and hit all apps, they do not show, but when I try to install them, they say they are already installed. Their icons are not showing up in the app drawer either. The phone is a galaxy grand prime 5.1.1. Thank you!