a search menu in the main content

I have a page for my company’s product. I want to put in some kind of search menu for our entire list of product. Specifically, I want something like this https://ballhort.com/Growers/advancedsearch.aspx

I know there are plugins for custom menus, but I don’t want it to be in a sidebar. I want it to be in the main content. I’m still new at this and have been trying to research it. I know basic html, but that’s about it. What’s the easiest way? Any help is greatly appreciated.