You’ve already been advised in a previous post not to say outside of or inside of. The of is both unnecessary and incorrect in each case.
Of creeps in elsewhere, where it should not. As in the shudder-inducing off of, Please, just off. Or perhaps from (I got it from the internet, not off of).
Or as in It’s not that big of a deal. You mean It’s not that big a deal (although not much of a big deal).
Where you should be using of is with the verb enamoured: you are enamoured of (not with) someone if you are in love with that person (enamoured by the person if you are loved back).