Unable to connect my iPhone 16 Pro Max to Wi-Fi after iOS 18.5 update

So as of Thursday after me and my kids phones ALL updated to IOS18.5 cannot connect to our home WiFi now. All of a sudden after 3 years of no issues? The one Android phone in the house has no issues connecting. We thought it was the WiFi router, so we got a new one, and nope. We’ve done all the things, reset network settings, hard restart, airplane mode off & on, restarted phones and WiFi router hundreds of times, reset network settings, disable VPN and private network and so on and so forth. Literally nothing is helping. It’s this update. I need this update off our phones until they fix it. Apparently it’s happening to many others but not everyone. We’ve called Apple twice they don’t know how to fix it? I’ve seen past discussions on here about this with this update and I need to know if anyone has found the solution for this? PLEASE! We are in a dead zone at my house for our T-Mobile service, so without WiFi our phones do not work at all! (That’s also something we will be changing here soon) but in the mean time I need this fixed. Our phones connect to other WiFi’s it’s literally just this one all of a sudden.

[Re-Titled by Moderator]