Tier 2 support cant help Safari not working

Here is a doozy for you! Hopefully someone can hep!

I noticed in early june 2025 safari was having difficulty loading webpages i would have to refresh all the time. I flew from aust to doha it worked fine. Flew from doha to Chicago and it wouldnt load any webpage or allow me to log into any app as it needs a connection with safari. Got home to Aust in july. Safari still not loading or working. Get two errors either a “null” error or internal webkit error. I contacted apple support and have been raised to tier 2 supervisor. Have been sent instore have tried factory resets, full restore, sending logs to apple engineers via tier 2. Updating to newest version of iso. Have installed chrome so at least i have a browser but cannot log into any of my apps as it goes to a continue. Screen associated with safari.

have had to pull out my old xs phone which has no battery life and wont update any further. Its obviously now November and there is no solution from apple. Scary thing is one of the techs said while they dont know what caused it or how to fix it its a known issue with apple. I am truly at a loss. Beyond frustrated.

I bought the phone outright less than a year before this happened.

do any of you wonderful apple community have any tips or tricks?