Why when checking if string contains some text it's never true?

Question

Example of string : https://IMSRadar/IMSRadar_202110161220.gif

The code :

if (urls[i].Contains("radar"))
                    {
                        await Client.DownloadFileTaskAsync(new Uri(urls[i]), fNameRad);
                    }
                    else
                    {
                        await Client.DownloadFileTaskAsync(new Uri(urls[i]), fNameSat);
                    }

I used a break point it's never getting to the first case and never save it as fNameRad only getting to the else and save it as fNameSat and the word radar is in the link/s