How do I lighten my hair without destroying it completely?

So, a few months ago I bleached my hair to almost white (to dye it blue), but after some weeks I decided to dye it black because I was tired of the color bleeding everywhere and getting too weak, too fast (I generally knew it would happen, since I have been doing this for quite some time, but the colors I wanted don’t reach my country anymore, so I had to settle with a worse brand, blah blah blah). Anyway, now my hair is dyed black, which I totally regret. Is there a way to get rid of the black dye without using actual bleach (since that would probably damage my hair beyond any hope for repair)?