Best Practices for Implementing a Back to Top Button

Hi! Does anyone know what is the best way to implement the "back to the top" button? The "back to the top" button that I placed in footer goes to home page and not to the top of the current page? I have an anchor link going the top main navigation that's also a symbol. https://www.ochsner.org/ochsner-health-network/. Ochsner Health Network The largest physician-led clinically integrated network in the Gulf South, OHN is proud to partner with like-minded physicians and health systems to extend the benefits of value-based care to the communities we serve.