I am to login on web-page on share-point site but when i try to access from C# getting wrong username or email Id error

Question

Below is my C# code which I am using for connect SharePoint site.

When I try to access same SharePoint site from web page it's working fine and I able to access it But when I try to with below code I am getting error.

Microsoft.SharePoint.Client.IdcrlException: 'The sign-in name or password does not match one in the Microsoft account system.'

string targetSiteURL = "https://test.sharepoint.com/sites/SD/";


                var login = "[email protected]";
                var password = "password";
                SecureString securePass = new SecureString();

            foreach (char c in password.ToCharArray())
            {
                securePass.AppendChar(c);
            }

            //AuthenticationManager am = new AuthenticationManager();
            //using (var cc = am.GetSharePointOnlineAuthenticatedContextTenant(targetSiteURL, login, securePass))
            //{
            //    cc.ExecuteQuery();
            //    var count = cc.Web.Lists.Count;

            //}

            ClientContext context = new ClientContext(targetSiteURL);
            context.RequestTimeout = -1;
            context.AuthenticationMode = ClientAuthenticationMode.Default;

            Web web = context.Web;



            context.Credentials = new SharePointOnlineCredentials(login, securePass);

            try
            {
                context.Load(web);
                //context.ExecuteQueryAsync();

                context.ExecuteQuery();
                //context.ExecuteQueryAsync().Wait();
                //var str = "true";
            }
            catch (Exception e)
            {
                var error = e.ToString();
            }

Before asking question here, I spend a lot of time on it but i didn't get any solution. If any one know the solution of it then that is very helpful for me.

Notes- I am using below packages in C#.