My iPhone 13 pro max can’t find or connect with my 5ghz band wifi

Hey there. Before upgrading to iOS 16 it was fine but now my iPhone is not connecting with my 5ghz wifi. Nor I can find it in the wifi settings. If I reset the network settings or restart my iPhone it comes back but it stays for just a minute and then disconnects again and vanishes. I have other apple products connected with the 5ghz wifi and they are fine but my iPhone is not connecting or finding my 5ghz router.. any suggestions or tips? Thanks in advance.