If you have a VPN installed on your phone delete it. They create the exact problem you are describing. I had the same exact problem until I deleted the VPN.
I’ve had other wi-fi related internet problems where internet access/searched will time out with errors or the time to load a page is beyond slow, etc... What worked for me was
- closing all open apps,
- closing all open google pages,
- turn wi-go off
- turn phone off
- reset the wi-fi router, via the physical reset button on the router that is located under the router and typically requires a pin to reach the reset button, and hold it down for about 15. Seconds.
- if you can’t find the routers reset button, turn router off for 30 seconds
- Turn router on and wait for it to fully power up, initialize and be operational
- power up your iPhone
- turn on wi-fi
Check to see that you can get pages to load faster.