Debugging Fix in HTML CSS JAVASCRIPT CODE

I need someone who can fix html css javascript code in my companys' intranet webpage. The webpage is in SharePoint. The problem is: I need to do word seach from the webpage through Search Box/Bar. The search bar is not working. Because of the access issue and companys' privacy, I can not provide any documents. You have to work on zoom call by guiding me. I know it's simple issue for the person who knows javascript coding. Do not worry, I will explain the code.