Password protected pages

I successfully password protected a page that I don’t want the public to access. It was not hard. However, in doing some testing, I’ve found it’s entirely possible and quite simple for someone who has the password to have the page open, copy the link and send it to someone else who will be able to easily view it.

Is there a way to make so this can’t happen? I don’t know coding so is there an easy way for me to correct this? I’d like the link to take them right back to the original page where they have to enter the password.