This is a psuedo rant post.

To give some context, I have been interviewing since october last year. And after failing various interviews for SSE/L4/L5 roles(read 20 odd interviews), I finally managed to crack a couple of interviews(Comapny A,Company B). And I was ecstatic about it. And since one of the two company is good company and had the job profile I wanted, So I said no to Company A and decided to join Company B. And also put down my papers in the current organisation where I was working.
But yesterday I got mail from Company B HR stating that due to COVID-19 they have put all hiring on hold and my joining has been postponed indefinitely(Initial Joining was April 2nd week). Also yesterday was my last working at my current organisation. So basically I am jobless now.And I really amazed how things have taken a turn for the worse. And seeing the current market situation I dont see any companies hiring as of now.
So I am not sure what I can do now. Do you guys have any idea or suggestions what can I do now,given I cant go back to my previous organisation?

UPDATE : Managed to get job in small startup. So current situation is not that dire. Thanks for all those who gave their valuable feedback :)