iPhone 6plus lost aps after last iOS update

ok I am a hardcore apple person but this iOS update to my iPhone 6+ has frustrated me. I feel like I am dealing w a Windows update! Yup it's that bad.

Point adter update date last week majority of my apps had updates. Ok no problem. Except I had to uninstall Facebook & reinstall because it would not complete update. And Pandora is "lost".

I Mean it is no where on my phone & yet if I go to App store and sectvit I get the "open" button. But nothing happens when I select it. Literally nothing.

WMagen I search for Pandora on my phone. It's not there. I did not delete the app it has simply disappeared.

I Use Pandira daily. so this past week has been very frustrating.

I Have other issues too but that I will address elsewhere.