My hair is brown with thick redish high lights in the front and i wanna dye it all brown and put in

my hair is brown with thick redish high lights in the front and i wanna dye it all brown and put in pink highlights, which i have done before.. but when i dyed my hair about 2 months ago just a strawberry brown.. it turned my hair 2 different colors where i had the brown and red.. so do i have to bleach all of my hair so it wont turn it 2 different colors when i dye it again?

My hair is brown with thick redish high lights in the front and i wanna dye it all brown and put in pink high

Deary, this is not something to be doing on your own. I would suggest going to a salon. Explain what you want and they can help you. From a cosmetologist, once you go dark it is hard to go back. A stylist may want to use lightner or a "soap cap" to lighten your hair. Let me try to explain this, you have your hair and many layers of color on it that you want to remove thus you need something that can break down those layers/remove them in order to get what you want, hun. If money is a problem, just go to the salon this once instead of putting lots of money into something that you can't predict the outcome to. Good luck

My hair is brown with thick redish high lights in the front and i wanna dye it all brown and put in pink high

that really something you should go to the salon to do the results tis time may not be to your liking