I need a hairstylist help and advice

So a few months ago I went all blonde then I later on started adding a color depositing conditioner to my hair it completely stained my hair (it was a blue color if that matters) and couldn’t get it out so I dyed over it with a permanent black dye (box dye) bad I know but now my hair is washing out the dye each wash and the blonde is starting to show through again it’s currently at a light brown color now and still is washing out. My question is will it all wash out and be blonde again or like a dirty blonde or what will happen exactly?. I googled it and apparently no one has experienced what I’ve done before because nothing would come up at all