I currently work at Company A (media/entertainment) and recently interviewed at and accepted an offer at Company B (agriculture).
As of today, I was on my last couple of days at Company A, after giving them 4 weeks notice. I spoke with my manager at length when giving notice, about how I was no longer happy working in media/entertainment and was looking for a change of industry and to improve my mental health. He was very supportive and understood my decision.
Over the last 4 weeks, I've been filling out paper work for Company B and they've already sent me a company laptop and other home office equipment. Both positions are remote.
Today, Company B calls to tell me that due to business/financial reasons they had to rescind my offer. I was set to start working there in just 3 days. They told me it had nothing to do with me personally (background check passed, interviewers gave glowing reviews, etc.) and that if the situation changes, I would be among the first to be hired. There's no timeline of that, however.
With intense humiliation and awkwardness I had a call with my manager at Company A and let him know. He said he needs to talk to HR to see what can be done. He said they would be glad to keep me if they could, but did bring up a (completely valid) question about my motivation to keep working in media/entertainment. He said he'd talk to me soon after consulting HR.
In the mean time, I've started applying to some jobs to prepare for a possible worst case scenario. But my manager brings up a good point. I don't want to work at Company A in the first place, but it is better than being unemployed. I've clearly shown that I'm a "flight risk".
Do I go back to Company A long term? Should I ask for just an extension of my notice period? Or should I just charge ahead applying to new jobs?
I saw this related question, but the crucial difference with me is that the labor market is very different than it was two years ago (much more in favor of employees). Financially, I'm okay for now. I have a year's worth of savings and my wife will be starting working soon now also.
This is in the Eastern US.