connection is not private

That means that the WiFi network to which you are connected is poorly secured. (i.e. not encrypted, or encrypted w/ weak protocols)

This is a router / WiFi access point hardware setup issue.

See article for Apple’s recommendations re: settings:

https://support.apple.com/en-us/HT202068

I have the same issue but I am not connected to WIFI. I am unable to use safari at all as I get every time " this Connection is not Private". I click on to go to website anways and it just goes blank. I have cleared my cashe and website history. I have reset my network settings. What can I do I want to be able to use the internet!

Stephen