iPhone WiFi not connecting‼️

So one day my WiFi decided to disconnect from my iPhone and I’m having trouble to re connect. The main connection is tc8715d07 and there’s this other connection that has the 5G at the end. It’s only letting me connect to the 5G even tho everyone in the house (Samsung lovers) is connected to the main connection. Everything was restarted and even my network setting was reset. If I’m far from the router it will tell me to move closer with the 5G connection. What do I do!? Should I go to apple?