@1d1a1y , please believe me, you are most definitely not alone in your feelings and there should be absolutely no shame or blame attached to your current emotional response to your child.
A few things (apologies for the scattergun approach but I’m racing out of my front door for an imminent appointment):
have your child’s medical needs been properly diagnosed? I’m thinking the screaming sounds like autism/ADHD? These conditions are often overlooked in adopted children because professionals can get very hung up on attachment and trauma and not always consider the bigger picture?
is your child accessing the right school ie a setting for social and emotional behavioural issues rather than mainstream? Many of our children are so frozen and frightened at school and can present as compliant but then erupt at home because the pressure of putting on a front all day is exhausting.
are you claiming all the benefits to which you could be entitled ie DLA to relieve the financial pressure of part-time working? Do you get an adoption allowance because it most definitely sounds like you should (adoption allowances do not impact on benefits like Universal Credit and not does DLA).
can you ask your PASW to apply for Short Breaks funding so you can have a personal assistant take over the care of your child for a few hours a week to give you a break to recharge your batteries?
reach out to the very experienced adopters on the AdoptionUK forums to ask their advice.
read up around Section 20 orders and consider contacting Nigel Priestley (an adoption specialist lawyer) for a free consultation.
check out if there is a Caring for the Carers-type peer support group in your area; they can offer luxurious things like massages as well as listening ears.
try to hold your head up high with your neighbours (I’ve also been reported anonymously to the NSPCC and my LA’s frontline team due to the level of screaming coming from my house). I’m afraid it can come with the territory when you’re parenting a traumatised child with complex needs.
please read up on secondary trauma and blocked care as it sounds like you are stuck in a horrible place (been there, done that and worn the t-shirt so often that it’s now washed up, baggy and full of holes). Honestly, I think you need to start by thinking what you can do for you that could help to improve your quality of life.
I will check in again later. Sending you all my very best wishes and most positive thoughts. Please know that you are supported here.