Novenas are private devotions. That’s all they are. Nothing else.
Our Blessed Lord wants us to pray for what we want, because we are supposed to acknowledge our utter and total dependence on Him, and to subordinate our “want” to His Will. Put another way, we are to do Him the courtesy of asking Him, even though He has known from all eternity precisely what we need, and what we do not need.
I know you know this, but God is not our magic genie, and X number of “special prayers” will not change His Will. He wants you to ask like a little child for what you would prefer, and He wants you to accept with joyful obedience whatever He ends up giving you — or not giving you.