I'm on my last day at current job, onboard for about 3 weeks then the company told me that they don't want to train me. They want me to figure it out regardless of the fact that I just graduated a few months ago and I'm a total newbie in this field. And the most annoying thing is they choose me while interview, and I have already told them that I have zero experience, they were fine with it until now. In the JD they wrote that applicants will be guided during 2 months of onbroarding.
omg, I'm so sad, I'm trying to stay tough, but now I'm so tired to do so. I have missed a lot of opportunities, and I chose the wrong places all the time.
I'm thinking to become a hikikomori, I'm so scared and weak and vulnerable

First of all that is definitely some major bullshit

But you also shouldn't give up in trying to move forward in your own life just cause this company lied to and used you. I don't know much about your field (is it like really hard to get a job in?) or how important it is to you so I can't try to relate to how crushed you might be, but the state of mind you're in right now will be the worst it gets to with this as long as you keep trying, and you're only *thinking* about it.

You're plenty tough, being and feeling vulnerable is normal. Just remember that the amount of vulnerability you feel is directly correlated to how much this means to you, and if this field matters that much to you, then it's part of your identity and that will never change. You will always care this much unless you do something.

So go be a shut in when you don't care anymore.

Maybe I am really depressed right now, so I can't think clearly. I set my expectations way too high, and now I’m the one drowning at the bottom of my own disappointment.
For the past three months, I’ve been constantly rushing to find a job. I’ve switched three jobs during this time, and my mental energy has been completely drained. I want to give up, but I also can’t stand being unemployed in other people’s eyes, and I can’t pay my own bills.
Sometimes I feel like this kind of life is not for me, I just can't function as well as other people. I feel like an outcast

Oh, my field is related to pharmacy, and it requires a lot of effort to secure a good job. Since it’s the end of the year, the number of job offers has also decreased. I might stay unemployed until next year.

All I can say is I hope you keep at it, I have some friends doing pharmacology here at uni and it's a seriously impressive field from my view here as a plebeian who's biological and chemical knowledge only wholly extends to 'the mitochondria is the powerhouse of the cell'.

I know it seems the world is ending and things look the worst they've ever been ur whole life but trust me it's not the end, theres so much more meaning to ur life that what other see you as and even if things look bleak it's your life that's why it's special when u place importance to other things ull forget how imp ur own life is so remember that ur living that's why it's important to you so don't give up and. Don't let anything else decide whether ur life is worth it or not only u can even if the everyone else thinks otherwise