How to deal with failures?

Dk how to deal with this. I failed a big exam for the 2nd time. I was feeling depressed for past 2 years and I feel like it may get worse after this. My parents are not being supportive anymore and are sometimes being abusive. They are telling me to leave the house. My career path is almost destroyed. I didn't wanted to do a job but I'll have to do a random job to sustain myself which won't be able to do properly. People are even suggesting sex work as a joke because I have no skill anywhere. I hate myself, it's as if I am totally useless. I get flashbacks of the past and it causes regret. I called my friends and most didn't respond, one did and he laughed at me. They all are in second year of university. And I am not getting a college. And to think I was better in studies than a lot of them. Now I have forgotten even high school science. This hurts the most. I don't know much time it will take to recover from this. Whenever I study my self confidence gets low and I feel like a fool who don't deserve to study. It's like imposter syndrome but I actually don't have any skills too. Don't have anyone who listens or understands me. I am trying something ways but failure resurfaces. It's hard to live, even harder to live actively. Just give some tips on how to live through this.