Completely fed up

I recently completed my A levels (A*A*A*A) and i am currently taking a gap year to study an additional A level with the aim of pursuing engineering next year. Alongside this, I'm about to start a part-time retail job. Unfortunately, my household situation is challenging due to my mums terminal cancer diagnosis in late 2022, my dad's unemployment due to mental health issues, and my brother's struggles with mental health.

Despite not facing significant mental health issues myself (partly because I’m probably slightly autistic), the stress at home is overwhelming, especially with constant arguing and tension. I'm eager to leave for university, as my mom's pain and the household dynamics add to the strain. My dad, dealing with mental health issues, criticizes my efforts even though I balance work experience, studies, and socializing. The constant stress and criticism make me feel less productive than I want to be, and I'm seeking advice on managing this situation. Anyone got anything?

Additionally, I wonder if universities like Imperial or Bath provide any extra considerations or adjustments in the application process for applicants in challenging family situations, such as mine. I'm curious if there are any possibilities for lower grade requirements given the circumstances.

Thank you all.