How can I get a level 7-6 dark copper red color from a level 9 strawberry blonde?

My hair was bleached to a level 9 yellow blonde and then dyed to a level 9 strawberry blonde (light orange) using box dye. I m trying to do this with box dye. But I m also wanting a dark red color. Which color be easier to get to or can get to? My hair s inprettty good condition so I can box dye again in some weeks.
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