To be fair, this issue was happening with my iPhone X also for the last 2 years. Every single time I leave a working Wifi connection (home or work), I can't use Safari, Google, Chrome, etc. Oddly enough, Waze and other apps work (some don't), can make phone calls with no problems. However the only way to get a web search to work is restarting my iPhone, though at times I can toggle cellular off/back on to do the trick. But why should there need to be a trick, it should just work and turning your phone on and off each time you leave WiFi is just simply aggravating... lol. Ugh! (2 years worth of pain resurfacing there)
I've reset network settings more times than I can remember over the 2 years...no dice! Any help, ideas would be appreciated as this has gone on long enough. Peace! - Fredy