Please state in which country your phrase tends to be used, what the phrase is, and what it should be.
Example:
In America, recently came across “back-petal”, instead of back-pedal. Also, still hearing “for all intensive purposes” instead of “for all intents and purposes”.
Right, and for pronouns you don’t just put apostrophe s after. So you don’t make “it” possessive by adding apostrophe s just like you don’t add apostrophe s to “he” or “him” to make it possessive.
If you treat the pronoun “it” like a regular (non-pronoun) noun instead of like other pronouns, that is itself an exception.