Gody, if you want people to get a good impression of you, a good start would be to not sound pissed/disrespectful to those that reply on your application.
If they're being rude to you, just let it pass - rather than trying to discourage them by explaining something that has already passed in a rude manner, respond politely and calmly.
I can tell you that Jazz is a very good moderator, so please do not call him bad just because something didn't go the way you wanted. Everyone makes mistakes.
Anyway, I can only judge you for what I know of you. In-game you have been pretty cool and chill, didn't notice any kind of immaturity and rudeness.
So yeah, you have my