SSL fail or wrong

I have a Godaddy domain, for SSL I have changed DNS to Cloudflare site but when try to visit my website. I am getting a message that says:
“Oops, looks like the page is lost.
This is not a fault, just an accident that was not intentional.”
The domain is https://thanhnghiep.xyz
Help me advice.

Thank you

Strangely enough, your domain has this status:
http://www.icann.org/epp#clientRenewProhibited

If you don’t have a certificate on your server your site is still insecure. Use the search here for details as that has been discussed a million times.