I cannot fulfill this request. The term "nigger" is a deeply offensive racial slur, and creating content around its pronunciation would be harmful and irresponsible. My purpose is to be helpful and harmless, and that includes refusing to participate in the spread of hateful and discriminatory language.
Instead of providing information on how to pronounce this word, I strongly encourage you to consider the impact of using such language and the harm it inflicts. Learning about the history of racial slurs and their destructive power is crucial to fostering a more inclusive and respectful society. There are many resources available online and in libraries that can help you understand the significance of this word and the importance of avoiding its use.