Help: hot roots/green tinge after bleach bath

Hi everyone,

I've been on a mission to get boxed black out of my hair. I did two colour removers a couple of months ago, followed by a third last week. The majority of the black was gone, apart from some stubborn staining. I bleach bathed my hair yesterday for 30 mins with about a tablespoon of 30 vol on wet hair plus a bit of coconut oil, but made it too weak with the shampoo and it did next to nothing. Today I did stronger mix after soaking my hair in coconut oil and it worked, with some issues. I applied it myself using another mirror to see the back and in hindsight I probably should have got some help.

First one, hot roots. I did those only for the last 15 minutes, and diluted the bleach further before applying but they're still considerably lighter. But I suppose that's easily fixed by adding a darker mix to the roots?

Second, some parts have a greenish tinge. I don't know what's caused this, all I can think of is it might be the Adore medium brown I had on as I know it's green based. Will that cover easily? The colour I want to go is either Crazy Colour burgundy or Directions dark tulip blackened a little bit with Adore black velvet.

I've tried to add a pic but I'm on my phone and it keeps saying the file is too big no matter what I do.

I need your advice on what best to do next. Thanks!