about maturity, I understand that part, but what about helping people? I ALWAYS try to help people regardless what I'm doing. If anyone asks any question, its me who usually replies first. I don't really see how more helpful I can be. If you expect me to give out diamonds to people then no. I don't want to be helpful like that.
You focus more on helping staff (like ask to add minigames and make them, knowing they will probably not be accepted, or requesting plugins that you know previously that will occupy unnecessary memory) then helping other players.
Like Elle said,
being helpful as a SM is mainly giving the correct information for new members or other players that need it... You do not need to give diamonds... just help them around with useful commands/tips. Though you do that sometimes,
we still expect more from you. Also your spammy and immature attitude did not help your success on this application.
You try so hard to get staff attention but in the end you do not do what a SM should usually do.
You have a lot of experience, I know, but focus on using that experience on members or other SM instead of focusing only on getting staff's attention, for now =].
Consider reapply when you think you have fulfilled these requirements.