Your words are logical and I am always awareIt is an understandable feeling, but lots of applications get rejected. Being an editor is not for everybody. An advice is to write an application with care and also make sure the example sites are good candidates to the category applied for.
Thank you for your replyWhile many applications are rejected, if you truly wish to be an editor, do not give up. Careful reading of the guidelines and help should assist in your writing of an application that may be accepted. So, unless you were specifically asked to not apply again, by all means, fill out a new application.
Thanks for your great interest dearUsually a rejection answer comes with some general issues that may apply to the specific application, one or more of them may apply to the rejected application. If the reviewing meta chooses, more specific reasons for rejection may be included.
Remember that it is always possible to apply again and that it is quite difficult to be accepted as an editor, especially in some competetive or spam-prone categories.
Hopefully you will have better luck with your next attempt!