ASP.NET Core can't see images when acceding by browser

I've created an ASP.NET Core 3.1 Web API project, on IIS Express it works perfectly with the controllers. I've created a folder called images and copied some .jpg files there.

My idea was get those images from my Xamarin app using the url, like

http://192.168.0.185:52493/img/lucas.PNG

but nothing is being returned. Then I've tried writing the url directly into Internet Explorer, but nothing happens, the image is not shown in the browser either.

Any idea what it can be?