External links, for instance, should always open in a new browser tab. Your goal in designing a website is to get more visitors to convert. Letting an external link replace your website in the open tab will only decrease the chances of that happening.
How do I open an external link in a new tab?
How to Open Hyperlinks in a New Browser Tab or Window. The short answer is: just add a target="_blank" attribute to your links (anchor tags). Now when your visitors click that link, it will open in a new window or tab (depending on which web browser they are using and how they configured that browser).
Should internal links open in a new tab SEO?
Managing Links for SEO and User Experience
Generally, internal links should open in the same tab, while external links should open in new tabs. If you choose to open external links in the same tab as your website, it will affect both you and your users.