You have setup your website and everything is working as excepted until you browse to your website without the www's and you get the message Your connection is not private
.
What is happening here is that your website is setup on the www. which is a subdomain and different to the root/bare/naked version of your URL without the www.
To fix, put a redirect on the URL without the www to the version with the www.
For example, redirect example.com
to www.example.com
.
The fix will depend on where you have delegated your DNS.
Using Cloudflare refer to https://support.cloudflare.com/hc/en-us/articles/218411427#redirects - in summary, setup a page rule to do a redirect.
For others do a search on the following how do I create a 301 redirect for a root/"naked" domain
along with your DNS provider name.
Can you improve this post with a comment? especially interested with helpful links for DNS providers.