Simple Next & Previous Page code

Hi there, I’d like to create a ‘previous page’ and ‘next page’ button to sit in the header of my website and allow visitors to simply go to the next or previous page of my website.

Is there a simple code I can input to allow them to do this?

https://support.wix.com/en/article/corvid-tutorial-creating-previous-and-next-buttons-for-a-dynamic-item-page-with-code
https://www.grampsworkbench.com/Examples/Back-Button
https://www.grampsworkbench.com/Examples/Dynamic-Page-Loop?fbclid=IwAR3hu5MWdPNRozhfppIBwyuHI-rGWE6n1U6HIl7ZiVsE8FxatLgmZlNlmB4