How do I remove an app off of my IPhone 6 when it doesn't show me the little x symbol and doesn't appear in settings?

A few months ago, I downloaded this one app hoping to be able to watch free movies instead, another app got downloaded onto my phone. I'm not dumb; I know how to delete apps off of my phone. I've even went to settings to try and search for the app there and it doesn't show up. It's like it doesn't even exist on my phone.

It hasn't done anything to my phone that I know of. I can't find anything anywhere about this because it seems nobody else has had this issue. Did I just download a virus or something?

Plug you phone into your computer whet you run I tunes, and also back it up. If you've can find an OLD version of iTunes, this works - not worth the newer ones (sneaky, them…). When the library of apps comes up, delete it there. Had worked for me for a couple of these renegades. I keep one computer in the house with NO updates on I tunes, just because I want to see that so panel. You can also Park this app as inactive if you only have new version of iTunes. And you can drag it to another screen so you do not have to see it. It you share an account and either of you keys it, it us not gonna leave. Most legit ones will. These are like crazy glue. No guarantees, but worth a poke.