I can’t download apps from the App Store

I’m having issues downloading apps onto my iPhone XR. On an app it will say “get” in blue. I press the icon and then it asks for my Apple ID passcode. I type it in and then it loads for a second and then asks when it should ask for permission for further purchases and asks you to tap either “always ask” or “after 15 minutes.” I tapped always ask and then it doesn’t download the app. It goes back blue and says “get” once again. I went through that process again and tried pressing after 15 minutes and it did the same thing. I’ve signed out of the App Store and signed back in, powered off and on my iPhone and even reset my settings. Nothings working. Please help.