Hairdresser butchered by hair, despite my pleas to fix it

Attached first are photos of what I ASKED for. I have naturally dark brown hair and keep a single pink streak in it. I wanted to mix things up and do what’s known as the “Neapolitan” hairstyle. I showed him multiple reference pics (first), all of them show half a side of hair with minimum 6 stripes of color in it. Additionally I said how I disliked the super “blocky” “stripey” look on top, I realized then it was kind of unavoidable but I specially said how much I hated the brown stripe across left to right in the one “do not” reference photo (also pictured). As he started blocking out my hair and bleaching I expressed to him that there was not enough color and I wanted smaller sections. He told me because my hair was curly it wouldn’t look right and would all blend together. I’ve been seeing this guy for a while so I trusted his judgement, however I made multiple attempts to get more colors and stripes in my hair and he blocked me at every turn. This is what I ended up with and I am honestly crashing out. My hair is super important to me and my identity. I PLEADED with him MULTIPLE steps of the way and he wouldn’t change a THING, it cost me over $500 and now I’m just trying to figure out how I can fix it at home. Any advice?

Final picture is a color map of how it is/how I might try to fix it myself - I would love any and all advice on this please, also bleach recommendations bc my hair is suuuuper dark