Anyway (while I admit I know little of your actual situation) I think you’re probably overestimating how hard to would be to find another job - because you’re lacking in confidence, and the unknown component of what a new employer might want is daunting. I’ve been there - my assessment of my employability varies tremendously, due to nothing but my changing mood.

Why don’t you just try applying for a few jobs? Don’t look on it as an ‘all or nothing’ situation, and try not to attach any major hope there. View it as an information-gathering exercise - an experiment. Even if you don’t succeed at first, you’ll gather valuable information about the jobs market, and it might give you a direction to take in the generation of new skills.