Feeling like a loser

Hi guys, So I resigned from a unicorn recently because it was hell toxic and I was getting anxiety attacks. So I put in my papers, but the twist in the story is they curtailed my notice period. So now, I am jobless and feeling completely lost. Though interviews are in the pipeline but I didn’t get chance to prepare even during weekends due to excessive workload. Now, I got rejected in multiple companies . Also, I tried rescheduling a few interviews and the HRs got pissed off and said the position has already been filled (which is not true). So, now I am preparing but still feeling like a complete loser and losing confidence.