WiFi connection issue on IPhone 11 Pro Max

My phone connects to our WiFi but doesn’t load anything or basically work? It doesn’t say that there are any connection issues at all, and my device has worked on this WiFi before. It’s not giving issues on any android devices just the two iPhone 11 series phones we have which is leading me to believe it’s an internal connection issue? I’ve reset network settings, restarted phone and router , rejoined WiFi and I’ve changed the WiFi to mobile data settings as well, none of which has availed to anything.

we have a 100mbs upload/download speed so there shouldn’t be any trouble loading nonetheless not working at all