Hey Niko,
I've had a look at your application to give you some feedback. Your applications is overall well written. Your explanation of the rules is good, you examples are fitting. Your approach to the given scenarios is mostly good. Your "Why should I be chosen" section is alright. You don't have any recent punishments and your activity is alright. The real problem however lies in your behavior and attitude. Multiple members of the community say that you're frequently toxic and aggressive. You're also currently forum banned. You really need to work on your behavior, if you want to become a staff member again. Good Luck!