Looking for hair dye? We've got you covered.

Hey guys, new here and I'm in need of advice!

So, I've been bleaching out a faded black box dye, so far I've bleached twice and I've ended up with the photo I've uploaded, there's alot more blonde and yellows but that's the darkest bit..

My question is, should I bleach again, use a bleach bath, or use Loreal Preference ultimate platinum dye which can apparently lift up to 8 shades? I've put a picture of the box down below

End game is for me to go dusty lavender purple with directions lilac or wisteria, obviously don't want to end up over processing by using a full bleach if the dye or bleach bath would lift enough :)

Any advice is appreciated :D last time I did this was about 10 years ago and alot has changed since then!