ASP.NET Core Default Routing Doesn't Redirect to Desired Page

I've been having trouble with changing the default route of my ASP.Net Core web app. I had changed the default route to other page but it still redirects me to the previous page. Below is the snippet of my code for reference:

Startup.cs

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
                // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                app.UseHsts();
            }
            app.UseHttpsRedirection();
            app.UseStaticFiles();
            app.UseSession();

            app.UseRouting();

            app.UseAuthorization();

            app.UseEndpoints(endpoints =>
            {
                endpoints.MapRazorPages();
                endpoints.MapControllers();
            });

            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Main}"); //I had changed this but still redirect me Login
            });
        }

HomeController.cs

public class HomeController : Controller
    {
        public IActionResult Login()
        {
            return View();
        }

        [SessionTimeout]
        public IActionResult Main()
        {
            return View();
        }
    }

As you can see, there are 2 actions in my controller. Previously I used Login as the default route. Now I want the default route to be Main. But it still redirects me to Login. I also had tried to change the launchUrl, but still doesn't solve this issue.

Really appreciates any help. Thanks in advance.