Hide Controller Name and ActionMethod from Url in ASP.Net Core MVC

How to hide action method from url in ASP.Net Core.

I have a layout page and there is a link on it as below: 

<a asp-area="Admin" asp-controller="Category" asp-action="Index">Category</a>

The link calls the following action method: 

public IActionResult Index()
{   
    return View();
}

The problem is the URL and need to hide Area/Controller/Action Method. So I add the attribute

[Route("TestRoute")] to the top of the action method and so change the link as below: 

<a href="~/TestRoute">Category</a>

I used href instead of tag helpers after using Route attribute to hide Area/ActionMethod in my URL, and I need to know if I can still/yet use tag helpers without showing Area/Controllers in my URL?

Or let me know if I am doing the right way?