iPhone XS connected to Wifi but apps not working and icon not showing

I've had my iPhone XS have multiple problems with its apps functionalities and internet connection. Also the wifi icon showing that I'm connected doesn't appear in the top right corner of my screen but my settings do say I'm connected to my network. My service and Wifi are both connected but my iPhone still fails to use most apps and can't connect to the internet although it says in settings that I'm connected to both my Wifi and service. At the moment I can't even use the App Store. I've tried turning my service and Wifi off multiple times, turning airplane mode on and off, resetting my network settings, resetting my phone, deleting apps, opening and closing apps, and everything possible. I know that this problem is not because of my network because my other devices work perfectly but it's because of the iPhone itself. This iPhone is also fairly new because I bought it just last fall. Please let me know anything else I can do because I'm starting to lose hope.