Hi
@Alfarooq
Welcome to the forum. Just like many of us, if not all of us, it sounds as if you are depressed. When depressed we fluctuate between feelings of anger, desperation, despair, loathing as well as many other emotions. It looks as if you've found the right place to vent. Feel free to do so as necessary.
If you don't mind me asking, would you feel comfortable talking about some of the mistakes you've made? Its possible you are being exceptionally hard on yourself and some of what you label as mistakes are just part of the learning and growing process that life throws our way.
Why do you believe the depression is your fault? What happened, specifically?
Home schooling / working has taken a toll on many beginning with the pandemic. You are not alone if you are no longer motivated. May I ask how old you are? Assuming you are a normal-aged college student (18-25) then having ongoing stressors are normal. Many of us put pressure on ourselves (in addition to family pressures) to finish early or "on-time". Honestly there is really no such thing. These are constructs the outside world created. Nothing more than "norms" if such a thing existed. Norms are unspoken rules that are often worth breaking. Taking a well-deserved break from school is ok especially if it can provide some much needed room and space to breath as well as time for introspection.
What did you do to let your parents down? Why do you feel they have been let down? Assuming your parents are not abusive and they are "normal" I'd imagine they only want the best for you. They are human and sometimes get it wrong. They may not recognize we've been pushed past our limits and its time to take a new approach. Do you mind discussing them?
What happened with your sister that would make her say something like that? Is it possible this is just an intensified version of sibling rivalry? I don't know all the details and would like to hear. I'm hoping she is just responding inappropriately to you, not realizing that you are going through a really tough time and are on the brink.
I can't really say anything to dispel how you feel about people. Many of us on this site also believe the majority of people as fake in this world. I empathize with your experience. I am there too.
What makes you feel like everyone is succeeding around you and you are not? I'm not sure what country you live in but there is a lot of "fake it til you make it" culture now buried within society. I would not trust what others are putting out there. There are numerous people who put on the heir of having it alltogether then go home and cry their eyes out nightly. Don't believe the hype!
Also, have you considered or tried any forms of therapy? Is that acceptable within your family or country?
Hopefully you feel comfortable talking a bit more about your situation. Venting always helps if nothing else.