Well, there are some controversies about travelling a lot. Some people say that travelling a lot is a red flag and they might get suspicious, especially for some destinations. Other believe that traveling to many EU countries is actually a good sign. It shows how safe you are.Thank you Mr_nobody. I just asked about my status through webmail and they respond to me 2 days after and mentioned that my SS not started. I am not sure if I will be sent for SS, as I lived in Sweden, Norway, the Netherlands, USA, and Denmark in the past 10 years. Additionally, I traveled to so many countries in the past 10 years. But most of my trips were to European countries and Iran.
all in all, it is purely luck and depends on that officer.
Generally I wouldn't trust 100% the status from web mail. Their response, especially to status update, is usually a template email. If you truely want to know what is going on with your application, order notes.