Anyone here a hair stylist ? 😭

So months ago I used box dye and my hair was brown with patchy spots (don’t come after me with the box dye 😭😭 I don’t have money to go out and get it professionally done LOL) anyways I wanna go blonde and I know the procedures of how it starts out orange is like my hair but as you can see in the middle of my head it’s still blotchy!!! I went to Sally’s beauty and used salon care volume 20 and 40 mixed with Clairol professional shimmer lights (to bleach it) and then used volume 40 and ion permanent creame color 9n.

I did this July 16th. How long should I wait to dye it again? And how do I get rid of the different color patches in the middle of my head???

Here’s my hair before

(If you look closely you can see top of my head is brownish, middle is black and rest is dark brown and blonde streaks in front )