How do I link a Privacy Policy from my footer to a hidden page?

I want to add a privacy policy in my footer, that links to an internal page that states the policy. I have done this, with no problem, using the html : 

<a href="https://myname.myportfolio.com/privacy-policy.html ">Privacy Policy</a>

However, I do not want the said policy page to be in my navigation bar. The minute I hide the page from the naviagation bar, (even though it is still active), the link in the footer takes you to my homepage. When I go to the URL of my home-page in the browser, it says https://myname.myportfolio.com/privacy-policy instead of  https://myname.myportfolio.com/home. When I check back in the editor, the home page shows the correct URL of  https://myname.myportfolio.com/home. What is going on? Is this a glitch? (I have tried a couple of browsers), or does this feature only work when a page is showing in the navigation?