My last post...

Nobody has not still corrected my post :'(

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ok?:)

My last post...

Nobody has not still corrected my post :'(

that is like a triple negative!  Try to avoid the negative form and express it positively 

Nobody/No one has corrected my post yet.

or

My post is still/remains uncorrected (you can often write a negative statement positively by using the negative form)