How to navigate to an ASP.NET page?

Question

ASP.NET

The standard path contains the index file
localhost:5001/Home/Index (Views>Home>Index.cshtml)
It works without problems, but the similar file t-shirts
localhost:5001/Home/t-shirts is no longer visible, although the path is the same and the same. I do not understand.
I haven't touched anything in the code yet, I'm just typesetting, I ran into this. I use links like I think the problem is this, but my head does not understand, but it would be necessary to finish. And another question: Is it possible to somehow remove this Home on the way to the site page? Make it localhost/t-shirts ? <a href="t-shirts.cshtml">