Another Damaged hair after bleaching

I keep an eye on the threads (lurking in the background if you like) about bleaching as I wanted to do mine for some time (2 years)but wanted to make sure that I did it right without orange, and many thanks to many folk on here I have managed it.
However my hair is extremely dry, and feels very slimy when wet. Lots of breakage too, and when I break a strand it does go curly.
I bleach bathed to lift the colour and then tinted with Wella 9A Very Light Ash Blonde, not what I wanted I thought so a month later I lifted the roots and tinted with Wella 8A Light Ash Blonde but found it too dark  🙁 So the next time I bleach bathed again but used a box bought colour Schwarzkopf Hair mask Pearl Blonde and I'm happy with the colour, but at a cost.
I have used coconut oil, regular use Tresemme Keratin Smooth, Matrix hair balm and what I've had good results from Aphogee two step treatment and still not getting any better. I have the hiar to spare to cut but any further advice I have missed would be grateful. Due to be coloured next weekend as it'll be 5 weeks and there's a good cm of growth.
I use 20% Wella developer and wholesale own brand blue bleach with clear shampoo for the bleach bath.

This is what it looks like

Thanks in advance