Is there any way to make it to where all my post are private and only registered members can see it? Like when you google my phone number it brings up previous post where you can see my pic/phone number etc
The short answer is "no."
Google picking up results here on ECCIE has nothing to do with your account privacy settings. If you have reviews in a publicly available forum, they will be searched by Google.
If you are concerned about things like your phone number getting out there, you should start a policy were you list it as private/upon screening, and encourage users who write reviews to not include it in public view.