Not getting Joining after accepting Offer Letter and already resigned based on the offer letter

Hi! I have a situation, let me explain briefly. In 2019, around September, I have an interview with an MNC for a role in abroad. In 2020, January, after several discussions with salary I accepted their offer. They provide me the offer letter and I accepted the same with no time. Later they applied for my work visa which generally takes 90 days and they advised me not to resign (written). After getting the visa I can resign. But from April 2020 Covid-19 hits the floor. My visa application got rejected. And as advised I didn't resigned. The employment got stuck. But after 5-6 months, around December 2020, when covid-19 was seem to be under control, I contacted them and again based on my accepted offer in January 2020 they again processed my work visa. And in March 2021, I got my visa. Then they advised me to resign (verbally) and I followed. I had 1 month notice to me previous employer. I happily served and got relieved in April 2021. But here comes the tragedy, covid-19 second wave comes along the way. I have waited till June 2021 for confirmation from my new employer. No proper response. In July I am informed verbally to look for other opportunities, as it has been almost 2 years and they can't proceed further with the employment. It is understandable that they also does not have anything in their hand. But still I am the one who is affected most. Now unemployed. I have my own financial commitments. My question: What should I do now? What could I do now to bring everything on track? Please note, I am not much interested to sue the company UNLESS IT IS WORTHY. Any legal advice, personal advice, professional advice will be welcomed. Thanks in Advance.